Magnetic gears, whose input sides are physically isolated with the output sides, have special advantages over mechanical gears in some occasions.

磁性齿轮依靠磁场作用传递转矩，其输入与输出之间非接触性传递的特点使得它在特定场合较机械齿轮具有特殊的优势。

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Generally used for the mechanical gears, machinery parts, housings, valves, electrical and electronic, automotive parts and aerospace, aviation and other industries.

一般用于机械方面为齿轮、机械配件、壳体、阀门，电器电子、汽车工业配件和宇航、航空等工业。

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In-wheel motor reduces the components and weight of the whole drivetrain hence enhancing the reliability and efficiency of the whole system due to absence of mechanical gears.

车轮电机由于取消了齿轮和机械差动器，减小了驱动链的组件，因而减小了整个驱动链的重量，提高整个系统的可靠性和效率。

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Still, even to non-technical people, it was clear that there were logical processes that controlled the gears of mechanical systems or the circuits of computers in ways that were useful and not, at the time, obvious.

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