GB/T 20671.5-2020非金属垫片材料分类体系及试验方法第5部分:垫片材料蠕变松弛率试验方法标准
英文:Classification system and test methods for nonmetallic gasket materials—Part 5: Standard test method for creep relaxa...
英文:Classification system and test methods for nonmetallic gasket materials—Part 5: Standard test method for creep relaxa...