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1.The National Fire Protection Agency (NFPA) Guidelines require a confirming flow test to be conducted whenever a "main line" valve such as the shutoff valves or a backflow assembly have been operated.
美国国家防火协会（NFPA）指导原则要求对于主管线上运行的阀门，如关闭阀或防回流阀总成，必须进行流量测试。收藏指正
2.Series 774XDCDA contains two independently operating check valves located between two resilient seated shutoffs with four ball valve type test cocks and a hydraulically balanced metered bypass line to detect low flows.
系列774XDCDA包含两个独立运行的止回阀，位于两个弹性阀座关闭阀之间，并配置四个球阀型测试旋塞，以及一个液压平衡仪表旁路管线用于检测低流量。收藏指正
3.Must be installed to allow complete drainage of both the valve and discharge line.
必须安装到具有完全排泄能力的阀门和排泄管上。收藏指正
4.Install a needle valve in the control line. If uneven pressure should cause the regulator to pulsate, its action can be stabilized by throttling the valve.
在控制管线上安装一个针形阀。如果不稳定的压力导致调节阀波动，则这种波动通过对阀门节流将稳定下来。收藏指正
5.To measure the concerned parameter at production line, a highly automatic steady-state test bench based on the old version is presented in this paper, on which the valve lift and test pressure are all computer-controlled.
本文在原气道试验台基础上，设计了一套自动化程度较高的气道稳态试验台，可以对气门升程和试验压力进行自动调节，适用于生产线上使用。收藏指正
6.FLEX 10 probe was placed around four pulmonary orifices and the access orifice of the inferior vena cava to tricuspid annulus. The microwave application was set 65 W, 90 s and a continuous ablation line was finished encircling the pulmonary veins. Subsequently, patients underwent either off-pump coronary artery bypass graft or valve surgery on-pump.
将FLEX10微波探头完整包绕4个肺静脉入口及下腔静脉开口至三尖瓣环,微波能量65W、90s进行连续性心外膜消融,然后在体外循环下行瓣膜置换术或不停跳冠状动脉旁路术。收藏指正
7.According to the Design Code for Filling and Emptying System of Shiplocks and the layout characteristics of the second line of Qililong Sea Route on Fuchun River and the upstream navigation tunnel, the type of the filling and emptying system of shiplocks is determined, the area of the culvert transect at the valve is calculated, and the layout type and key size of the filling and emptying system are recommended.
摘要根据富春江七里泷航道第二通道工程船闸及其上游通航隧道总体布置的特点，按照《船闸输水系统设计规范》的要求，确定了船闸的输水系统型式，并计算了输水阀门处廊道断面的面积；推荐了通航船闸输水系统的布置及关键尺寸。收藏指正
8.The column oven was set at a low temperature for separating the trace S2 F10 O form the major constituent SF6. Then the column temperature was increased to a high temperature to speed up the elution of S2F10, O and switched it into flame photometric detector (FPD) by a four-port valve after the main part of SF6 was flowed out of the thermal conductivity detector and a vent line.
用火焰光度检测器检测，进样量为 1mL时，S2F10O最小检测浓度为5×10－7（mol／ mol）。收藏指正
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