查询词典 pressure meter

Airlift pump ; pressure drop ; standard orifice flow meter ; liquid flow rate

气提泵；压降；标准孔板流量计；液体流量

This thesis deals with oil-water flow rate measurement using a venturi and develops a differential pressure-based two-phase flow rate measurement model, which does a terrific job with the use of a water fraction device. Meanwhile, Coriolis flow rate meter is also studied in the oil-water two-phase flow measurement and a SVM-based single-phase flow rate prediction method is proposed, realizing the prediction of single-phase flow rates. To overcome the disadvantages of both venturi and Coriolis flow meters, a double parameter measurement method is put forward, which combines the two meters and solves the problem of oil-water flow rate measurement. Last but not least, on the basis of the study of two-phase flow, a device for the separation of gas and liquid is designed and realizes the flow rate measurement of three-phase flow as oil, gas and water.

本文对文丘里管测量油水两相流流量进行了研究，建立了基于差压法的两相流流量测量模型，如果与含水率计相结合，可以较好的实现油水两相流的流量测量；同时研究了Coriolis流量计在油水两相流流量测量中的应用，提出了基于SVM的油水两相流分相流量预测方法，实现了油水分相质量流量的预测；针对文丘里管和Coriolis测量油水两相流存在的问题，提出了文丘里管和Coriolis流量计相结合的双参数测量方法，并实现了油水两相流的流量测量；最后，在对油水两相流研究的基础上，设计完成了一种气液分离装置，实现了油气水三相流的流量测量。

Because the flow meter orifice pressure by correspondence before the impact of heavy flow, if required flow accuracy of 10%, the valve must be over before the straight section 10d, and this works in practice extremely difficult to protect.

由于孔板流量计的流量压差对应关系受到前流态影响极重，如果要求流量精度达到10%，则必须阀前有10d以上的直管段，而这一点工程实际中极难保障。

This probe suits the measurement of micro gas flow,which conforms with the theory of the differential\|pressure orifice flow meter,and it is designed light and handy and used conveniently.

该探头适用微流量气体流量的测量，采用了差压式孔板流量计的原理，设计轻巧，使用方便，能够进行远距离无失真传输，方便了现场测试。

A cold-water supply system consists essentially of a communication pipe、a meter box、pressure boosters、storage taks、a piping line、valves and water-dispensing fixtures.

一个冷水给水系统的基本组成是：引入管、水表盒、增压设施、贮水箱、管道、闸阀和配水器具。

Proposing simple evaluation methods and evaluation values are the key factors affecting the popularizing of self-compacting concrete technology. The advantage and disadvantage of several methods for evaluating the workability of self-compacting pumpcrete, such as slump, bleeding under pressure, slump flow, the outpour time of inverse slump cone, the flow speed of Orimet meter,...

探讨了坍落度、压力泌水、扩展值、中边差、倒坍落筒流下时间、Orimet仪的流出速度、L型流动实验等多种评价免振捣泵送混凝土工作性能的指标及其优缺点；经对比分析并结合实验研究和工程实际，提出了实用的新拌免振捣混凝土工作性评价指标及其合理取值区间：坍落度一般应控制在 230~260mm，倒坍流下时间 8~15s，扩展值 600~700mm，中边差值≤25mm，压力泌水实验中的S10不超过 40%， V140在 40~110mL。

Our company has early been specialized in producing calorimeters, pre—payment IC card for cold and hot water meter, pressure gauge／manometer, etc.

本企业较早专业生产热量表及预付费IC卡控制阀冷、热水水表和压力表、超声波冷热量表、温度计、蒸汽流量计、电磁流量计、涡街流量计、等流量计系列产品。

Employing modern deep drilling techniques, Chinese Continental Scientific Drilling Project is to drill a 5000 meter deep hole in the eastern part of Dabie-Sulu ultra-high pressure metamorphic belt that has global geoscientific significance.

中国大陆科学钻探工程(Chinese Continental Scientific Drilling Program，CCSD)是利用现代深部钻探高新技术，在具有全球地学意义的大别-苏鲁超高压变质带实施中国第一口5000米科学深钻，利用从钻孔中获取的岩心及液、气态样品及原位测量数据，进行多学科综合研究，揭示大陆造山带的深部物质组成与结构构造，重塑超高压变质带形成与折返机制，探索深部流体与生物圈，检测现代地质运动，建立长期的地下观测实验站及地壳深部物质研究基地。

Effects of components of fuel-rich boron-based solid propellant on burning rate in low pressure and explosive heat were investigated by measuring its burning rate with standard burner method and explosive heat with calorie meter of oxygen bomb.

采用推进剂静态燃速测试仪和氧弹式量热器的试验方法，研究了各组分对含硼富燃料推进剂低压燃速和爆热的影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。