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标题: ASTM A27/A27M-20 Steel Castings, Carbon, for General Application [打印本页]

作者: wzg8762 时间: 2020-12-1 08:57:50 标题: ASTM A27/A27M-20 Steel Castings, Carbon, for General Application

ASTM A27/A27M-20 Standard Specification for Steel Castings, Carbon, for General Application
一般用途碳素钢铸件标准规范

作者: admin 时间: 2020-12-1 09:48:28

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