介绍了ZYJ7型电液转辙机的特点及技术改进和工艺质量控制，并提出了养护使用时应注意的事项。
The characteristics, technological innovation and technology quality control of ZYJ7 electrohydraulic switch machine is introduced in this paper, and the issues in the maintenance are put forward .
论述了电炉厂的探伤修磨生产线在品种开发、工艺改进和质量控制方面的作用和贡献。
The paper discusses that the production line of crack detection grinding at EAF Plant has played an important role and contribution to grade development, process improvement and quality control.
六西格玛质量管理是现代企业进行质量控制和工艺优化最强有力的方法，是企业增加客户满意度并获得持续改进的系统工具。
Six Sigma is the most cogent method for modern enterprises to control quality and optimizing process, it is also a systematical tool to satisfy customers and to achieve persistent improvement.
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