GB 12107-1989.Series of key width measurements for keyboard musical inst rument....

国家标准2023.07.22

GB 12111-1989.Industrial sew ing machi ne-L ockstitch straight butt onhole sewi...

国家标准2023.07.22

GB 12112-1989.Industrial sewing machine- cylinder bed covering chainstitch sewin...

国家标准2023.07.22

GB 2798-1981.Types and dimensions of cylindrical and recessed caps.GB 2798适用于电光源...

国家标准2023.07.22

GB 5000-1985.Terms for domestic ceramics.5.28干燥收缩率 :percent of drying shrinkage试...

国家标准2023.07.22

GB 7056-1986.Determination of pull-out force of upper bands from bottom of slipp...

国家标准2023.07.22

GB 8452-1987.Glass containers - Vertical axis deviation of bottles test methods....

国家标准2023.07.22

GB 10813.2-1989.Standard of celadon porcelain ware series Art's celadon porcelai...

国家标准2023.07.22

GB 10813.3-1989.Standard of celadon porcelain ware series Craquele glaze's celad...

国家标准2023.07.22

GB 10813. 4-1989.Standard of celadon porcelain ware series Celadon porcelain in...

国家标准2023.07.22