进气行程,活塞下行;压缩行程,活塞上行;做功行程,活塞下行;排气行程,活塞上行。
The piston travels down on the intake stroke, up on the compression stroke, down on the power stroke and up on the exhaust stroke.
进气行程,活塞下行;压缩行程,活塞上行;做功行程,活塞下行;排气行程,活塞上行。
The piston travels down on the intake stroke, up on the compression stroke, down on the power stroke and up on the exhaust stroke.
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