为此，对一段天然气管系的流体脉动激发振动进行了分析。
Therefore, the vibration induced by fluid pulsation is analyzed for a section of gas pipeline.
应用有限容积法对发动机排气管系中的气体流动作模拟计算。
FVM method was applied to simulate the unsteady gas flow in manifold of diesel engine.
上层建筑压缩空气管系(供水管、消防管、烟雾探测管)密性试验。
Superstructure compressed air (water supply, fire fighting, smoke detection) piping to be done air-tightness test.
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