... expansion turbine 膨胀式涡轮 expansion valve piston 伸缩式阀活塞 expansion valve 膨胀阀 ...
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expansion n valve piston 伸缩式阀活塞
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The expansion engine which has a inlet valve without exhaust valve, is a short piston engine.
膨胀机为进气有阀、排气无阀的短活塞型。
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