Measures for quality control of bacterial test of medical clinical specimens.
细菌检验；标本采集；质量控制。
The management system and the measures for quality control of the testing institution.
检测机构管理制度及质量控制措施。
The mechanism of sand adhering to casting parts is simply analyzed, some preventing measures for quality control proposed.
对铸件的粘砂机理作了简单分析，针对其影响因素，提出了防止铸件粘砂及其质量控制的措施。
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