BS 1881∶Part125∶1986 Testing concrete. Methods for mixing and sampling fresh concrete in the laboratBS 1881∶Part125∶1986 Testing concrete. Methods for mixing and sampling fresh concrete in the laboratory
部份国外标准涉及版权问题,所以全部国外标准于2013年02月,全部删除!相关页面仅提供参考消息。