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夹具质量的鉴定及其定期检验，必须有详细的记录。这样才能够减少与避免因夹具质量低劣所造成的废品。因此，文具检验证明书是工艺文件中的一个重要文件。这一文件，曾在苏联专家克拉沙夫柴夫的报告中重点地提出过（见本刊１９５３年第５期《机器制造厂工艺准备工作的组织》一文）。但因大部分厂未曾深入了解检验证书的重要性及其使用方法，以致多未采用；且目前因夹具漏检或没有检查纪录，使夹具精度缺乏依据而造成零件报废的现象还是很多。因此，想通过本文的介绍，对各厂有所帮助。
Fixture quality identification and periodic inspection, there must be detailed records. Only in this way can we reduce and avoid the junk caused by poor quality of the fixture. Therefore, the stationery inspection certificate is an important document in the process document. This document was highlighted in a report by Soviet expert Kraçvvitch (see article in 1953, No. 5, “Organization of the Process Preparation for a Machine Building Plant”). However, most of the factories did not know the importance of inspection certificates and how to use them. As a result, most of them failed to understand the importance of the inspection certificates and how to use them. In addition, there are still a lot of parts scrapped due to missing fixtures or lack of inspection records. Therefore, I would like to pass the introduction of this article, to help all the plants.