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为保护儿童青少年身心健康、防治学生常见病,保障教学任务的顺利完成,对学生的学习生活、教育过程、营养需要和心理、行为及其影响因素(物理、化学和生物因素等),以法定形式做出的量值规定以及为实现量值所作的有关技术行为规范的规定,经国家标准化主管部门(或国务院有关行政部门)批准发布的卫生标准。
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quality data management
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quality earnings analysis
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quality evaluation of airborne radioactivity survey
quality evaluation of forage products
quality evaluation of grassland
quality evaluation of radioactivity survey
quality factor
quality factor measurement
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quality handbook
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quality index of fiber-forming polymer
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Quality Inspection Center of Forest Chemical Products, Bureau of Forestry (Nanjing)
quality inspection of prefabricated components
quality inspection plan
quality intersection analysis
quality in the cross section
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