当工作条件不明或不稳定时，出口管路中必须安装节流阀，以保证泵在设计点运行。
A throttle valve must be installed along outlet pipeline when the conditions of work are not clear or stable, this can guarantee operation at the design point.
分析了制冷剂在节流阀前不出现闪发的条件下，多联机作用半径的理论极大值。
Analyses and finds the maximum theoretical action radius under the condition of no flash vaporization upper stream side of the throttle.
预测了巡航条件下发动机节流特性、内涵喷口几何面积对发动机性能影响，结果与其它有效数据相吻合。
The flow control characteristics and the effects of inner duct exit dimension on overall engine performances were presented by the program.
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