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中华人民共和国国家标准冷水作业分级ＧＢ／Ｔ１４４３９—９３Ｃｌａｓｓｉｆｉｃａｔｉｏｎｏｆｗｏｒｋｓｉｎｃｏｌｄｗａｔｅｒ￥／／１９９３—０６—１０批准１９９４—０１—０１实施（国家技术监督局）１主题内容及适用范围本标准规定了局部接触冷水作业的冷强度...
National Standard of the People’s Republic of China Classification of Cold Water Operation GB/T14439-93Classificationofworksincoldwater¥//1993-06-10 Approval 1994-01-01 Implementation (National Bureau of Technical Supervision) 1 Subject Content and Scope of Application This standard specifies the local contact cold water operation cold strength...