结果表明，这种机械自动换向的方法是可行的。

The result shows that the automatical reversing method is feasible.

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齿轮传动主要是通过齿轮的啮合作用来传递动力及实现减速、增速或换向的目的。

Gear power transmission is mainly through gear meshing to transmit power, realizing reducing and increasing speed or changing direction.

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该装置以组合量块为标准，采用可换向的单测头和成本较低的电感测微仪进行定位测量。

The new measurement system of thermal deformation adopts combined gauges as standard length, single switchable measuring head and inductance micrometers to carry on relative measurement.

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