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ASTM C1837-2017 管道、箱形件和预制件制造用干浇筑混凝土生产规格 Standard Specification for Production of Dry Cast Concrete Used for Manufacturing Pipe,Box,and Precast Structures

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raybet雷电竞电竞app下载地址编号：ASTM C1837-2017
raybet雷电竞电竞app下载地址状态：现行
更新时间：2023-05-17
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manufacturing specification production