for资源列表
-
[国外标准] JIS B1022-1999 Tolerances for fasteners-Part 3:Plain washers for bolts, screws and nuts-Product grad
-
[国外标准] JIS B1021-2003 Tolerances for fasteners-Part 1:Bolts, screws,studs and nuts-Product grades A,B and C
-
[国外标准] JIS B0652-1973 Instruments for the Measurement of Surface Roughness by the Interferometric Method
-
[国外标准] JIS A1485-2006 Method for measuring halocarbons in foamed plastics for thermal insulation-Thermal ex