HY-200 process procedure for colour chemical conversion coating of al and its alloys parts and the test method for quality control are introduced in this paper.

本文介绍了对铝及铝合金零件进行彩色化学转化处理的HY—200法的工艺及质量控制的试验方法。

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Based on the procedure for parametrical optimization of MEWMA control chart, a case study of its application in surface mount process for the solder joint quality control was presented.

提出了MEWMA控制图参数优化方法，对电子产品装配中的表面贴片工艺过程的焊点质量控制进行了研究。

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It is a systemic control process of the enterprise construction item's quality management control from working procedure quality to subentry, branch and unit engineering quality.

企业施工项目的质量管理控制是从工序质量到分项工程质量、分部工程质量、单位工程质量的系统控制过程。

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