Lanchester的设计中，两个平衡轴以两倍于机轴转速，反向地转动，抵消了无用的次生振动。

In Lanchester's design, two balance shafts rotated in opposite directions at twice the crankshaft speed to cancel out the niggling secondary vibrations.

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反向外部类…你可以扭转时间轴。

Reverse with external class... you can reverse the time.

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同一转子部件可用于反向，轴完全密封、不接触介质、不腐蚀螺纹、运行寿命长。

The same rotor parts can also be used opposite . The shaft is sealed completely , it doesn't touch medium or corrode the screw thread and has long operating lifespan.

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