1982资源列表
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[国外标准] BS 5075-1-1982 Concrete admixtures part 1. Specification for accelerating admixtures, retarding admi
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[国外标准] BS 4871-2-1982 Approval testing of welders working to approved welding procedures Part 2. TIG or MIG
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[国外标准] BS 443-1982 Specification for testing zinc coatings on steel wire and for quality requirements
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[国外标准] BS 4346-3-1982 Joints and fittings for use with unplasticized PVC pressure pipes part 3 Specificatio