This test pressure includes corrections for service conditions e. g. backpressure or high temperatures.
此试验压力包括工作条件如：背压和高温的校正值。
High delivery lift and high backpressure required in fuel throttle valve test were obtained through higher rotation speed of the main pump.
利用长征系列发动机主泵作为动力源，提高其转速，解决了燃料节流阀试验要求的高扬程、高背压等技术难题。
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