This paper states the basic principle of operation of cold drawing and straightening machine. It derives basic formula to determine the major size and parameters.

说明了该冷拉调直机的基本工作原理，推导了确定关键尺寸参数的基本公式。

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In most cases, the variation of the magnitudes of the characteristic events which may be representative of the major size earthquakes is about 0.5 unit of magnitude.

而代表一个震源区主要大小地震的特征事件，其震级波动大多在0.5个震级单位左右。

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In most cases, the variation of the magnitudes of the characteristic events which may be representative of the major size earthquakes is about 0.5 unit of magnitude.

而代表一个震源区主要大小地震的特征事件，其震级波动大多在0.5个震级单位左右。

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