ASTM C1244-11(2017) Standard Test Method for Concrete Sewer Manholes by the Negative Air Pressure (Vacuum) Test Prior to Backfil为PDF格式 下载页数共4页
ASTM C1244-11(2017) Standard Test Method for Concrete Sewer Manholes by the Negative Air Pressure (Vacuum) Test Prior to Backfil
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4页
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2024-04-23
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