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- 2019-05-24 ISO/TS 19807-2 "Nanotechnologies -- Magnetic nanomaterials -- Part 2: Specification of characteristics and measurements for nanostructured superparamagnetic beads for nucleic acid extraction"
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GB/T 12690.7-2021
稀土金属及其氧化物中非稀土杂质化学分析方法 第7部分:硅量的测定
Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 7: Determination of silicon content
GB/T 18910.202-2021
Liquid crystal display devices—Part 20-2: Visual inspection—Monochrome matrix liquid crystal display modules
GB/T 12690.4-2021
稀土金属及其氧化物中非稀土杂质化学分析方法 第4部分:氧、氮量的测定 脉冲-红外吸收法和脉冲-热导法
Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 4: Determination of oxygen and nitrogen contents—Impulse-infrared absorption and impulse-thermal conductivity method
GB/T 15055-2021
Permissible stamping variations in dimensions without tolerance indication
GB/T 40845-2021
Determination of azelaic acid in cosmetics－Gas chromatography method