BS EN 772-21. Methods of test for masonry units. Part 21. Determination of water absorption of clay and calcium silicate masonry units by cold water absorption
英国标准EN 772-21 砌体构件的试验方法 第21部分 用冷水吸收法测定粘土和硅酸钙砌块的吸水率
Cross References:EN 771-1EN 771-2EN 771-3EN 771-4EN 771-5EN 771-6All current amendments available at time of purchase are included with the purchase of this document.