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中华人民共和国劳动和劳动安全行业标准生产性粉尘作业危害程度分级检测规程ＬＤ８４－１９９５Ｒｕｌｅｓｏｆｉｎｓｐｅｃｔｆｏｒｃｌａｓｓｉｆｉｃａｔｉｏｎｏｆｈａｚａｒｄｌｅｖｅｌｓｄｕｅｔｏｅｘｐｏｓｕｒｅｔｏｉｎｄｕｓｔｒｉａｌｄｕｓｔ１９９５－０９...
The People’s Republic of China labor and labor safety industry standard dust production operation hazard classification test procedures LD84-1995Rulesofinspectforclassificationofhazardlevelsduetoexposuretoindustrialdust1995-09 ...