Displacement and strain measurement are an important task of mechanical testing.

对位移和应变的测量是力学测量中的重要任务。

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However at the free end, displacement is double and strain is zero.

在自由端，应力为零而位移加倍。

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However at the free end, displacement is double and strain is zero.

在自由端，应力为零而位移加倍。

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