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来源:雅诚德英语网
The space above the piston is now sealed due to the inlet valve closing and the exhaust valve having already closed.
由于进气门关闭、排气门也已关闭,现在活塞上部的空间被密封了。
The space above the piston is now sealed due to the inlet valve closing and the exhaust valve having already closed.
由于进气门关闭、排气门也已关闭,现在活塞上部的空间被密封了。