简述了旋转机械对中的意义和测量方法，指出了百分表对中法的主要误差因素及其控制方法。

This paper specifies the meaningfulness and measurement method of rotating machinery alignment and points out the main deviation factors of dial indicator alignment and its control method.

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摘要：简述了旋转机械对中的意义和测量方法，指出了百分表对中法的主要误差因素及其控制方法。

Abstract: This paper specifies the meaningfulness and measurement method of rotating machinery alignment and points out the main deviation factors of dial indicator alignment and its control method.

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该方法不仅可用于测量两轮对中参数，而且有助于机械工对车轮参数的有效调整。

The method will not only be used for measuring the two wheel alignment parameters but also help mechanician to adjust the auto wheel parameters effectively.

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