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GB/T 23561.2-2009
煤和岩石物理力学性质测定方法 第2部分:煤和岩石真密度测定方法
Methods for determining the physical and mechanical properties of coal and rock - Part 2: Methods for determining the true density of coal and rock
GB/T 15794-2009
Rules of investigation and forecast for the rice planthopper(Nilaparvata lugens stal and sogatalla furcifera horvath)
GB/T 13149-2009
Specification for welding of titanium and titanium alloy clad steel plates
GB/T 13147-2009
Specification for welding of copper and copper alloy clad steel plates
GB/T 23442-2009
Determination of structure and morphology for the precursors of polyacrylonitrile-based carbon fibers
GB/T 23405-2009
Determination of sodium cyclamate in bee products - LC-MS/MS Method
GB/T 23406-2009
肠衣中硝基咪唑类药物及其代谢物残留量的测定 液相色谱-质谱/质谱法
Determination of residues of nitroimidazoles and their metabolites in casing - LC-MS/MS method