lotus999 发表于 2014-12-1 19:01:51

JIS A 1802:1989

JIS A 1802:1989 Methods of Test for Production Control of Concrete (Method of Test for Surface Moisture In Fine Aggregate by Centrifugal Force)

admin 发表于 2014-12-2 12:49:59

谢谢您的分享,金币已奖励
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