Combining the engineering practice, this paper introduces the procedure, main points of control and treatment of quality problems for construction supervision of bored cast-in-situ piles.

本文结合工程实践，介绍钻孔灌注桩施工监理程序、控制要点及质量问题处理。

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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.

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。

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The article briefly describes the principles and applied working conditions of YQZ1400 hydraulic brake and gives the main electric control points of the brake in actual application.

本文简述了YQZ 1400型液压制动器的工作原理和应用工况，给出了该制动器在实际使用时的电气控制要点。

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