进气轴和排气轴用齿轮连接至转子轴， 并且进气轴和排气轴中的每一个都具有至少一个与进气阀口和排气阀口对准的开口。
The intake and exhaust shafts are geared to the rotor shaft and have at least one opening each that is aligned with the intake and the exhaust valve ports.
进气轴和排气轴用齿轮连接至转子轴， 并且进气轴和排气轴中的每一个都具有至少一个与进气阀口和排气阀口对准的开口。
The intake and exhaust shafts are geared to the rotor shaft and have at least one opening each that is aligned with the intake and the exhaust valve ports.
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