Weekly: Measure the pressure differential.
每周：测量压差。
Connect wire to pressure differential switch.
连线至差速压力开关。
Purpose: To test operation of pressure differential relief valve.
目的：检测差压安全阀的工作性能。
A pressure differential relief valve is located in a zone between the check valves.
压差安全阀位于止回阀之间的区内。
The switch provides a low-pressure differential signal to the engine control system.
此开关为引擎控制系统提供一个低压差动信号。
The pressure differential is the difference between the practical pressure and the ultimate pressure.
该压力差为实测压力值与极限压力值之差。
The pressure differential is the difference between the practical pressure and the ultimate pressure.
该压力差为实测压力值与极限压力值之差。
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