A landing gear drop test method is presented in this paper, in which the lift is simulated by an air actuator and accumulator system with constant pressure.

结合某型号飞机试验任务，阐述有关空气作动筒仿升的起落架落震试验方法。

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The paper analyzes theoretically the method, process and influence factors in air pressure test. And some reasonable way are brought up in it.

从理论上分析了燃气管网气密性试验的方法、过程和影响因素，提出较为合理的方法。

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The pressure distribution along the curved wall of an axially symmetric inlet so obtained was calculated by the relaxation method, and that of another was measured from an air-flow model test.

对用这种方法得到的一个轴对称进水口曲面上压力分布，进行了松弛法计算，还对另一个进行了气流模型试验。

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