One of the first mechanism invented using gears was the clocks. In fact, a clock is little more than a train of gears.
第一个利用齿轮做成的机械装置就是钟表，事实上，它只不过是用了一系列的齿轮。
The gear train includes a plurality of gears for transmitting torque from the input to the output.
齿轮系包括用于从输入部传递转矩到输出部的多个齿轮。
The gear train includes a plurality of gears for transmitting torque from the input to the output.
齿轮系包括用于从输入部传递转矩到输出部的多个齿轮。
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