By the practical engineering, authors show the quality influence factors and control measures of high-strength bolt connection in steel structure.

通过工程实例，介绍了钢结构中高强度螺栓连接的质量影响因素及控制措施。

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Analyzed the reason of coal_machine motor's connection bolt not hard up and the frame's limitation, working_out a reasonable technique, ensure the service quality of equipment.

分析采煤机电机接线柱焊接松动原因及结构缺陷，制订出合理的修复方法，保障设备维修质量。

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