GB/T 13580.5-1992
Determination of fluoride, chloride, ntrite, nitrate, salfate in the wet precipitation--Ion chromotography 大气降水中氟、氯、亚硝酸盐、硝酸盐、硫酸盐的测定 离子色谱法 |
GB/T 13452.3-1992
Paints and varnishes--Determination of hiding power--Part 1:Kubelka-Munk method for white and light coloured paints 色漆和清漆 遮盖力的测定 第一部分:适于白色和浅色漆的 Kubelka-Munk 法 |
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