您要查找的是不是：
- Valve exhibits high pressure drop. 阀门出现高压降。
- 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。
- Watch pressure drop on pressure gauge. 手表压力在压力标准度量上降低。
- Adjust balancing valve until pressure differential gauge reads pressure drop required for desired flow rate gpm. 调整平衡阀直到压差表读出压降符合所要求的流量（加仑/分钟）为止。
- Criteria for selection is minimum flow, normal flow, maximum flow and pressure drop across the valve. 选型标准是最小流量，正常流量，最大流量和通过阀门的压降。
- DID THE PRESSURE DROP TO 0 PSI AND A "NO DRIVE" CONDITION OCCUR? 压力是否降至0PSI而且条件"NO DRIVE"出现?
- However, the pressure drop occurs almost completely in the plug. 然而，压力降几乎完全发生在多孔塞中。
- Drier operates in either flow direction with low pressure drop. 在任何一方向都可操作应用。
- Presents the theoretical model of pressure drop for flexible duct. 摘要介绍了柔性风管压力损失的理论模型。
- Large Port Areasin the liner produce only a minimum of pressure drop through the valve and assure unrestricted movement of the disc. 超大端口面积位于阀腔内,使得通过阀门的压降最小,确保阀瓣的无限制移动。
- They are commonly used where a minimum pressure drop is important. 通常用在要求压降最小的应用场合。
- Kai Xuan-check Cast Steel Valve in the fully open state, almost unimpeded fluid pressure, the pressure drop through the valve relatively small. 旋启式止回阀在完全打开的状况下，流体压力几乎不受阻碍，因此通过阀门的压力降相对较小。
- Large Port Areas in the liner produce only a minimum of pressure drop through the valve and assure unrestricted movement of the disc. 超大端口面积位于阀腔内，使得通过阀门的压降最小，确保阀瓣的无限制移动。
- But, he has to turn on the valve, emits in the astronavigation clothing's air, pressure drop some, only then successfully returned to the cabin. 无奈之下，他只好打开阀门，放出宇航服中的空气，将压力降低了一些，才成功地返回舱内。
- spill valve type fuel injection pump 溢流阀式喷油泵
- A single reducing valve can be applied if operating flow, requirements are within the capacity of one size valve, and pressure drop is outside the Cavitation Zone. 如果一个阀门通径可以满足工作流量和要求,并且压降处于空穴区外,则可以安装单个减压阀。
- Spill Valve Regulating Fuel Injection Pump 回油阀调节式喷油泵
- For compressible fluids, where pressure drop exceeds half the inlet pressure. 对于可压缩性流体,如果压降超过进口压力的一半。
- For non-compressible fluids, where pressure drop causes cavitation or flashing. 对于不可压缩性流体,如果压降产生空穴或闪蒸。
- Repeat Steps 2 and 3 for other possible valve sizes, tabulate results, and make size selection on basis of pressure drop and duration of partial disc lift considerations. 对于其它可能的阀门通径，重复第2步和第3步，将结果制成表格，然后根据压降和阀瓣部分提升持续时间等因素，来确定阀门通径。
