简述了冷镦和冷挤压用钢国家标准的修订内容。
Describe the content modification of national standard for cold heading and cold extruding.
简述了冷镦和冷挤压用钢国家标准修订说明中的一点儿问题。
Describe some questions of the national standard modification statement of steel for cold heading and cold extruding.
简述了冷镦和冷挤压用钢国家标准修订说明中的一点儿问题。
Describe some questions of the national standard modification statement of steel for cold heading and cold extruding.
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