2003资源列表
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[国外标准] JIS B1060-2003 Mechanical and performance requirements of case hardened and tempered metric thread r
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[国外标准] JIS B1021-2003 Tolerances for fasteners-Part 1:Bolts, screws,studs and nuts-Product grades A,B and C
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[国外标准] JIS B0031-2003 Geometrical Product Specifications(GPS)-Indication of surface texture in technical pr