As guided needle valve system is greater than the amount of water displacement, the main valve pressure drop in the control room.
由于导阀系统排水量大于针阀的进水量，主阀控制室压力下降。
He says a pressure valve on one of the rocket's fuel tanks showed a drop.
他说，火箭燃料箱的一个压力阀显示压力降低。
Swing-type check off er the least pressure drop and offer simple automatic closure; when fluid flow stops gravity and flow reversal closes valve.
旋启式止回阀压降最小，能够完全自动关闭，即在介质流动停止、重力和介质倒流的状态下自动关闭阀门。
The high-pressure liquid refrigerant through the expansion valve, because the expansion valve throttling pressure drop, the refrigerant into normal temperature low pressure liquid.
常温高压的液体冷媒流过膨胀阀，因为膨胀阀的节流作用压力降低，使得冷媒变成常温低压的液体。
Read the pressure drop across the valve with a Watts Series PG meter.
利用美国瓦茨系列PG仪器读出通过阀门的压降。
Crane globe valves are highly efficient for services requiring frequent operation and throttling when pressure drop across the valve is about 20% of inlet pressure.
当通过阀门的压降为管路压力的20%左右时，美国克雷恩截止阀就能够高效应用在频繁操作和节流的应用场合。
This paper introduced control valve selection and its application based on the theory of flow characteristic, pressure drop, flashing, cavitation and noise.
针对调节阀的流量特性、压降、闪蒸、气蚀及噪音等问题介绍了调节阀在选型和应用中的要点。
The leakage through the valve causes the pressure drop.
通过阀的泄漏引起的压力降。
If flow rate is in excess of that specified, turn indicator knob towards closed position, noting pressure drop and valve setting and determining new flow rates from flow rate chart.
如果流量超过规定，将指示器旋钮旋转到关闭位置，注意压降和阀门设置，并从流量表中确定新的流量。
If flow rate is in excess of that specified, turn indicator towards closed position, noting pressure drop and valve setting and determining new flow rates from flow rate chart.
如果流量超过规定，将指示器旋转到关闭位置，注意压降和阀门设置，并从流量表中确定新的流量。
Combine a body the pump and the valve, and through pump's by-pass governing, causes the return route pressure to drop to lowly, thus reduces the pipeline and divulging.
将泵和阀组合成一体，并通过泵的旁通控制，使回路压力降至最低，从而减少管路及其泄漏。
The pressure drop of the combined wave guided valve trays were comprehensively studied based on the survey of the important valve trays nowadays.
在深入调研当前重要浮阀塔板的基础上，全面研究组合波纹导向浮阀塔板的压降性能。
For the safety of gas transmission in long distance pipeline, the method regarding how to get the proper value of pressure drop rate for the fast block valve on pipeline is studied.
根据输气管道安全的需要，对干线快速截断阀压降速率设定值的确定方法进行了研究。
Should be larger port area to ensure less friction and pressure drop across the valve.
较大开口区域应保证通过阀门较小的摩擦力和压力降。
The Y-pattern style has a minimal pressure-drop, even when compared with a conventional upright style globe valve.
形压降最小，即使与通用的直立式截止阀比较也是如此。
With the existing allocation of the traditional air control valve, its light weight, compact circuit, easy to install, reliable performance, pressure drop characteristics of a small loss.
与现有传统的气控分配阀相比，其具有重量轻、油路紧凑、易于安装、性能可靠、压力失降小的特点。
Under part-load conditions the use of a dynamic balancing valve is a more effective method to prevent a cavitation as it reduces the pressure drop across a balancing valve.
在部分负荷的条件下，利用动态平衡阀是防止气蚀的有效方法，因为它减少了通过平衡阀的压差。
In addition to continuous blowdown service, the Hancock high pressure drop valve is also used on feedwater bypass relief, sampling systems, drains and other services where erosion is extremely severe.
除了连续排污服务，高压降汉考克阀门也用在给水旁路救济，取样系统，排水渠及其他服务的地方水土流失极为严重。
Advanced construction features of this high pressure drop Angle globe valve provide quality and long service life, Class 800 ANSI.
这种高压降角截止阀功能提供先进的施工质量和使用寿命长，800类的ANSI。
The pressure drop on the Glitsch valve tray is analyzed. The models of pressure drop are derived dealing with the valve lift.
本文对V - 4型浮阀塔板压降进行了全面的分析，发现升程也是影响塔板压降的一个重要因素。
In chapter 4, the principle drawing of the system is presented after adding a constant-pressure-drop valve.
第四章，给出了系统中加定差减压阀后的结构原理图。
In chapter 4, the principle drawing of the system is presented after adding a constant-pressure-drop valve.
第四章，给出了系统中加定差减压阀后的结构原理图。
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