BS 1881∶Part120∶1983 Testing concrete. Method for determination of the compressive strength of concrBS 1881∶Part120∶1983 Testing concrete. Method for determination of the compressive strength of concrete cores
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。