GB/T 39655.2-2020
Shipbuilding—Ship screw propellers—Manufacturing tolerances—Part 2:Propellers of diameter between 0.8m and 2.5m inclusive 造船 船用螺旋桨 制造公差 第2部分:直径在0.8m至2.5m的螺旋桨 |
GB/T 39621-2020
Textiles—Quantitative chemical analysis—Mixture of cross-linked lyocell fibres and viscose or cupro or modal (method using formic acid and zinc chloride) 纺织品 定量化学分析 交联型莱赛尔纤维与粘胶纤维、铜氨纤维、莫代尔纤维的混合物(甲酸/氯化锌法) |
GB/T 39670-2020
Determination of nitrofuran metabolites in pet feeds—Liquid chromatography–tandem mass spectrometry 宠物饲料中硝基呋喃类代谢物残留量的测定 液相色谱-串联质谱法 |
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