GB 4545-1984.Glass containers 一strees exami nat ion一method of test.GB 4545适用于玻璃瓶...

国家标准2023.07.21

GB 4689.1-1984.Leather -L aboratory sam ple一Location and identi fi cat loo.GB 46...

国家标准2023.07.21

GB 4689.2-1984.Leather一Conditioning of test pieces for physical tests.GB 4689.2规...

国家标准2023.07.21

GB 4690-1984.Discrimination of the location of leather.GB 4690适用于黄牛皮、水牛皮、羊皮和猪皮制成...

国家标准2023.07.21

GB 4691-1984.Measuring the thickness of leather.GB 4691适用于测定皮革成品分类分级时的厚度。1仪器用长臂定...

国家标准2023.07.21

GB 4738.1-1984.Standard test method for acid, alkaline resistance for ceramic ma...

国家标准2023.07.21

GB 4738.2-1984.Standard test me thod for acid ，alkaline resistance for ceramic m...

国家标准2023.07.21

GB 4742-1984.Standard test method for lashing toughness of domestic cer amic.GB...

国家标准2023.07.21

GB 7455-1987.Determination of free caustic alk&li content in soaps.GB 7455等效...

国家标准2023.07.21

GB 7456-1987.Deter mination of total free a}kali content io soaps.1适用范圈GB 7456规定...

国家标准2023.07.21