Article(id=1320037525129904714, tenantId=1146029695717560320, journalId=1316781260334530699, issueId=1320037524588839497, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1005-0329.2026.02.001, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1758470400000, receivedDateStr=2025-09-22, revisedDate=1765728000000, revisedDateStr=2025-12-15, acceptedDate=null, acceptedDateStr=null, onlineDate=1792651071102, onlineDateStr=2026-10-22, pubDate=1772208000000, pubDateStr=2026-02-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792651071102, onlineIssueDateStr=2026-10-22, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792651071102, creator=13701087609, updateTime=1792651071102, updator=13701087609, issue=Issue{id=1320037524588839497, tenantId=1146029695717560320, journalId=1316781260334530699, year='2026', volume='54', issue='2', pageStart='1', pageEnd='118', issueExtLink='null', onlineDate='null', pubDate='1772208000000', pubDateStr='2026-02-28', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792651070972, creator='13701087609', updateTime=1792656210354, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1320059080773850045, tenantId=1146029695717560320, journalId=1316781260334530699, issueId=1320037524588839497, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1320059080773850046, tenantId=1146029695717560320, journalId=1316781260334530699, issueId=1320037524588839497, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1, endPage=9, ext={EN=ArticleExt(id=1320037525285093963, articleId=1320037525129904714, tenantId=1146029695717560320, journalId=1316781260334530699, language=EN, title=PIV experimental study on flow characteristics of a jet pump, columnId=null, journalTitle=Fluid Machinery, columnName=null, runingTitle=null, highlight=null, articleAbstract=
To deeply investigate the complex flow mechanisms inside a jet pump,2D visual measurement and quantitative analysis of the confined space jet flow field inside the jet pump were carried out based on a high‑precision particle image velocimetry (PIV) system.The study focused on the regulatory mechanisms of the area ratio m and the flow rate ratio q on its flow characteristics.The results indicate that the length of the potential core decreases as q decreases,and the smaller the m,the faster the shortening rate.The axial velocity accelerates first and then decays within the suction chamber,and the decay rate is negatively correlated with q.The height and width of the recirculation zone are negatively correlated with q and positively correlated with m.When m=4 and q=0.534,the dimensionless height and width of the recirculation zone are 0.26 and 0.73,respectively;when q drops to 0.04,the height increases to 0.6,while the width increases significantly to 4.37.The jet half‑width first increases with axial distance and then stabilizes,with q influencing the half‑width distribution in the midstream.The velocity distribution in the midstream and upstream exhibits a partial self‑similarity state,while the downstream displays pipe flow characteristics.The radial velocity shows an antisymmetric distribution,with the peak velocity decreasing as q decreases;the change in velocity direction affects the acceleration and deceleration of the jet.The throat inlet is the point of minimum pressure,and q has a significant influence on the magnitude of the pressure rise along the throat and diffuser.Complex flow structures such as jet boundary fluctuations,wake oscillations,and potential core intermittency appear in the transient flow field.Spanwise vortices are generated at the nozzle exit and distributed along the shear layer;a decrease in q intensifies the erosion of the vortex core region,promoting turbulent mixing and vorticity dissipation.The results of this study provide a reliable experimental basis for the optimal design of jet pumps.
, authors=Le WANG
1, 2, Yunzhi LIANG
1, 2, Wuping YAO
3, Honggang LI
3, Xiaoyu MO
1, 2, Xinping LONG
1, 2, authorsList=Le WANG, Yunzhi LIANG, Wuping YAO, Honggang LI, Xiaoyu MO, Xinping LONG, authorCompany=null, correspAuthors=Xinping LONG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1320037529525535334, articleId=1320037525129904714, tenantId=1146029695717560320, journalId=1316781260334530699, language=CN, title=射流泵流动特性的PIV试验研究, columnId=1317484286475883136, journalTitle=流体机械, columnName=试验研究, runingTitle=null, highlight=null, articleAbstract=
为深入探究射流泵内部复杂流动机理,基于高精度粒子图像测速(PIV)系统,对射流泵内部有限空间射流流场进行二维可视化测量与定量分析,重点研究了面积比m与流量比q对其流动特性的调控机制。结果表明,流核区长度随q减小而缩短,m越小,缩短速率越快;轴心速度在吸入室内先加速、后衰减,而衰减速率与q负相关;回流区的高度和宽度与q负相关,与m正相关,当m=4,q=0.534时,回流区无量纲高度和宽度分别为0.26与0.73,当q降至0.04时,高度增加到0.6,而宽度则大幅增加至4.37;射流半宽随轴向距离先增加后稳定,q则影响中游半宽分布;流动中上游速度分布呈现部分自模化状态,下游呈现管流特性;径向速度呈反对称分布,速度峰值随q减小降低,速度方向的转变影响射流的加速和衰减;喉管入口为压力最低点,q对喉管和扩散管内沿程压力的上升幅度具有显著影响;瞬态流场出现射流边界波动、尾迹振荡及流核间断等复杂流动结构;展向涡在喷嘴出口生成并沿剪切层分布,q的减小加剧涡对流核区的侵蚀,促进湍流融合与涡量耗散。研究结果为射流泵的优化设计提供可靠的试验依据。
, authors=王乐
1, 2, 梁蕴致
1, 2, 姚伍平
3, 李红钢
3, 莫小瑜
1, 2, 龙新平
1, 2, authorsList=王乐, 梁蕴致, 姚伍平, 李红钢, 莫小瑜, 龙新平, authorCompany=null, correspAuthors=龙新平, authorNote=
, correspAuthorsNote=
龙新平(1967),男,教授,博士生导师,研究方向为流体喷射技术、泵与泵装置的优化运行,通信地址:430072湖北省武汉市武昌区八一路299号武汉大学动力与机械学院,E-mail:
xplong@whu.edu.cn。
, copyrightStatement=
作者向本刊所投稿件一经本刊录用,则该论文的复制权、发行权、信息网络传播权、翻译权、汇编权等权利视为自动转让给本刊。本刊为国内各主要数据库收录期刊,本刊所发表的稿件将同时通过互联网进行网络出版或提供信息服务。, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=ke9yj84F5L3AVwrJoRtLYw==, magXml=kCqH0ZaWqlerbFYgreZABg==, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=x7BjLU9+JleyzxkkfFZ4iw==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=pzygTSftY3apkTpgq/FYvw==, mapNumber=null, fund=null)}, authors=[Author(id=1320037530058211953, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=wangle2001@whu.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1320037530137903732, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, authorId=1320037530058211953, language=EN, stringName=Le WANG, firstName=Le, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1武汉大学 动力与机械学院,武汉 430072
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王乐(2001),男,硕士研究生,研究方向为流体喷射技术,通信地址:430072湖北省武汉市武昌区八一路299号武汉大学动力与机械学院,E-mail:wangle2001@whu.edu.cn。
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王乐(2001),男,硕士研究生,研究方向为流体喷射技术,通信地址:430072湖北省武汉市武昌区八一路299号武汉大学动力与机械学院,E-mail:wangle2001@whu.edu.cn。
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1School of Power and Mechanical Engineering,Wuhan University,Wuhan 430072,China
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1武汉大学 动力与机械学院,武汉 430072
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1School of Power and Mechanical Engineering,Wuhan University,Wuhan 430072,China
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1武汉大学 动力与机械学院,武汉 430072
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its flow field[J].Chinese Journal of Hydrodynamics,1996,11(5):555-559., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1320037529802359399, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, xref=1, ext=[AuthorCompanyExt(id=1320037529810748008, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, companyId=1320037529802359399, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1武汉大学 动力与机械学院,武汉 430072)]), AuthorCompany(id=1320037529877856874, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, xref=2, ext=[AuthorCompanyExt(id=1320037529890439787, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, companyId=1320037529877856874, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2Key Laboratory of Hubei Province for Waterjet Theory & New Technology,Wuhan 430072,China), AuthorCompanyExt(id=1320037529894634092, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, companyId=1320037529877856874, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2水射流理论与新技术湖北省重点实验室,武汉 430072)]), AuthorCompany(id=1320037529970131565, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, xref=3, ext=[AuthorCompanyExt(id=1320037529978520174, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, companyId=1320037529970131565, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3武汉第二船舶设计研究所,武汉 430064)])], figs=[ArticleFig(id=1320037534034412188, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=EN, label=Fig.1, caption=
Schematic diagram of the jet pump structural model, figureFileSmall=E91VdgbK1xOnzEDR1O+z7g==, figureFileBig=x7BjLU9+JleyzxkkfFZ4iw==, tableContent=null), ArticleFig(id=1320037534109909661, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=CN, label=图1, caption=
射流泵结构模型示意, figureFileSmall=E91VdgbK1xOnzEDR1O+z7g==, figureFileBig=x7BjLU9+JleyzxkkfFZ4iw==, tableContent=null), ArticleFig(id=1320037534311236254, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=EN, label=Fig.2, caption=
PIV test system for the jet pump, figureFileSmall=nbErCt2Q5r6yNPXLsmR8cQ==, figureFileBig=B62CJO+3X49JXBxqRLkUHQ==, tableContent=null), ArticleFig(id=1320037534378345119, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=CN, label=图2, caption=
射流泵PIV测试系统, figureFileSmall=nbErCt2Q5r6yNPXLsmR8cQ==, figureFileBig=B62CJO+3X49JXBxqRLkUHQ==, tableContent=null), ArticleFig(id=1320037534445453984, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=EN, label=Fig.3, caption=
Time‑averaged axial velocity distribution contours fordifferent flow rate ratios (m=4), figureFileSmall=azbMK6Xgf9EIVnNnYy5Jtw==, figureFileBig=yLOp/l7nnQSa+sqmR+W/pA==, tableContent=null), ArticleFig(id=1320037534516757153, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=CN, label=图3, caption=
不同流量比的轴向速度时均分布云图(m=4), figureFileSmall=azbMK6Xgf9EIVnNnYy5Jtw==, figureFileBig=yLOp/l7nnQSa+sqmR+W/pA==, tableContent=null), ArticleFig(id=1320037534588060322, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=EN, label=Fig.4, caption=
Variation of potential core length with flow rate ratio q, figureFileSmall=yg6pxi0ZlBJ9Hb0j8pNWAA==, figureFileBig=5mlDWMZ3gVrC99oe9MlfRw==, tableContent=null), ArticleFig(id=1320037534697112227, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=CN, label=图4, caption=
流核区长度随流量比q的变化, figureFileSmall=yg6pxi0ZlBJ9Hb0j8pNWAA==, figureFileBig=5mlDWMZ3gVrC99oe9MlfRw==, tableContent=null), ArticleFig(id=1320037534789386916, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=EN, label=Fig.5, caption=
Schematic of centerline velocity decay for different flow rate ratios (m=2.56), figureFileSmall=GpkerzA8M84j19VfWGEamQ==, figureFileBig=V+pUPigh8XNfWdDnMwjrSA==, tableContent=null), ArticleFig(id=1320037534873272997, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=CN, label=图5, caption=
不同流量比的轴心线速度衰减示意(m=2.56), figureFileSmall=GpkerzA8M84j19VfWGEamQ==, figureFileBig=V+pUPigh8XNfWdDnMwjrSA==, tableContent=null), ArticleFig(id=1320037534952964774, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=EN, label=Fig.6, caption=
Schematic of the recirculation zone extent, figureFileSmall=3W+RsHrzBPPHx6GPDe+lJA==, figureFileBig=Je+zUT9MNPCFNenYCejc8A==, tableContent=null), ArticleFig(id=1320037535015879335, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=CN, label=图6, caption=
回流区范围示意, figureFileSmall=3W+RsHrzBPPHx6GPDe+lJA==, figureFileBig=Je+zUT9MNPCFNenYCejc8A==, tableContent=null), ArticleFig(id=1320037535078793896, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=EN, label=Fig.7, caption=
Variation of recirculation zone height and width, figureFileSmall=3UdthgoUBic5d9y0NSC5NA==, figureFileBig=sMrMmX5SWOzfiL6CsK3N4g==, tableContent=null), ArticleFig(id=1320037535175262889, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=CN, label=图7, caption=
回流区高度和宽度的变化情况, figureFileSmall=3UdthgoUBic5d9y0NSC5NA==, figureFileBig=sMrMmX5SWOzfiL6CsK3N4g==, tableContent=null), ArticleFig(id=1320037535246566058, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=EN, label=Fig.8, caption=
Jet half‑width distribution (m=4), figureFileSmall=AJp2xfQE+thwIVv0GXz8Dg==, figureFileBig=KBVFAGoqL9FPW80UXWVa2g==, tableContent=null), ArticleFig(id=1320037536483885739, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=CN, label=图8, caption=
射流半宽分布(m=4), figureFileSmall=AJp2xfQE+thwIVv0GXz8Dg==, figureFileBig=KBVFAGoqL9FPW80UXWVa2g==, tableContent=null), ArticleFig(id=1320037536580354732, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=EN, label=Fig.9, caption=
Radial distribution of axial velocity (m=4), figureFileSmall=7xXWaPSV9+WpIGqcP2JB3g==, figureFileBig=NMTOZkpwrOmANwdavZrUrg==, tableContent=null), ArticleFig(id=1320037536660046509, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=CN, label=图9, caption=
轴向速度的径向分布(m=4), figureFileSmall=7xXWaPSV9+WpIGqcP2JB3g==, figureFileBig=NMTOZkpwrOmANwdavZrUrg==, tableContent=null), ArticleFig(id=1320037536727155374, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=EN, label=Fig.10, caption=
Radial velocity distribution (m=2.56), figureFileSmall=W3fP1Q9GrGNOpy3pEjsvEA==, figureFileBig=0NbpYHI6tlkrVDMkRJcesA==, tableContent=null), ArticleFig(id=1320037536802652847, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=CN, label=图10, caption=
径向速度分布(m=2.56), figureFileSmall=W3fP1Q9GrGNOpy3pEjsvEA==, figureFileBig=0NbpYHI6tlkrVDMkRJcesA==, tableContent=null), ArticleFig(id=1320037536945259185, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=EN, label=Fig.11, caption=
Distribution of wall pressure coefficient along theflow path (m=2.56), figureFileSmall=6DFvkZNhoIDtGrirJ9F//w==, figureFileBig=d7GLCg/4MA2gqmGQAzqcVQ==, tableContent=null), ArticleFig(id=1320037537020756658, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=CN, label=图11, caption=
壁面沿程压力系数分布(m=2.56), figureFileSmall=6DFvkZNhoIDtGrirJ9F//w==, figureFileBig=d7GLCg/4MA2gqmGQAzqcVQ==, tableContent=null), ArticleFig(id=1320037537087865523, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=EN, label=Fig.12, caption=
Instantaneous velocity distribution contours fordifferent flow rate ratios (m=1.78), figureFileSmall=aIHwhJqDnxjKegdtm/VIwQ==, figureFileBig=CJ7Cy940VPlnDTr05m8IcA==, tableContent=null), ArticleFig(id=1320037537154974388, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=CN, label=图12, caption=
不同流量比下瞬时速度分布云图(m=1.78), figureFileSmall=aIHwhJqDnxjKegdtm/VIwQ==, figureFileBig=CJ7Cy940VPlnDTr05m8IcA==, tableContent=null), ArticleFig(id=1320037537230471861, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=EN, label=Fig.13, caption=
Instantaneous distribution contours of spanwisevorticity for different flow rate ratios (m=4), figureFileSmall=9BloQzOPKJPXHz6xy5/RjA==, figureFileBig=SZxXhLOrnCCfLclLGa1fsw==, tableContent=null), ArticleFig(id=1320037537301775030, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=CN, label=图13, caption=
不同流量比下展向涡瞬时分布云图(m=4), figureFileSmall=9BloQzOPKJPXHz6xy5/RjA==, figureFileBig=SZxXhLOrnCCfLclLGa1fsw==, tableContent=null), ArticleFig(id=1320037537368883895, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=EN, label=Tab.1, caption=
Structural parameters of the jet pump
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 工作管直径/mm | 被吸管直径/mm | 喉管直径/mm | 出口管直径/mm | 喷嘴直径 /mm | 面积比 | 收缩角 /(°) | 扩散角 /(°) |
|---|
| 数值 | 25 | 32 | 16 | 50 | 8,10,12 | 4,2.56,1.78 | 45 | 12 |
), ArticleFig(id=1320037537452769976, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=CN, label=表1, caption=
射流泵结构参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 工作管直径/mm | 被吸管直径/mm | 喉管直径/mm | 出口管直径/mm | 喷嘴直径 /mm | 面积比 | 收缩角 /(°) | 扩散角 /(°) |
|---|
| 数值 | 25 | 32 | 16 | 50 | 8,10,12 | 4,2.56,1.78 | 45 | 12 |
), ArticleFig(id=1320037537532461753, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=EN, label=Tab.2, caption=
Measurement instrument parameters of the jet pumpcirculation device
, figureFileSmall=null, figureFileBig=null, tableContent=
| 仪器名称 | 生产厂家 | 量程 | 精度 | 采样率 |
|---|
| 电磁流量计 | Krohne | 5 L/min | 0.5% | 5 kHz |
| 低频压力传感器 | 武汉超宇 | 1 MPa | 0.5% | 5 kHz |
| 高频脉动压力传感器 | 南京宏沐 | 0.6 MPa | 0.2% | 200 kHz |
), ArticleFig(id=1320037537620542138, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037525129904714, language=CN, label=表2, caption=
射流泵循环装置测量仪器参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 仪器名称 | 生产厂家 | 量程 | 精度 | 采样率 |
|---|
| 电磁流量计 | Krohne | 5 L/min | 0.5% | 5 kHz |
| 低频压力传感器 | 武汉超宇 | 1 MPa | 0.5% | 5 kHz |
| 高频脉动压力传感器 | 南京宏沐 | 0.6 MPa | 0.2% | 200 kHz |
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