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GB/T 13477.14-2019
建筑密封材料试验方法 第14部分:浸水及拉伸-压缩循环后粘结性的测定
Test method for building sealants－Part 14:Determination of resistance to prolonged exposure to water
GB/T 7962.21-2019
Test method of colourless optical glass—Part 21:Resistance to attack by aqueous alkaline solutions
GB/T 37717-2019
Information technology—Learning, education and training—Standards reference profile of e-Schoolbag
GB/T 37963-2019
Handbook of reliability prediction model and data for electronic equipment
GB/T 7962.23-2019
Test method of colourless optical glass—Part 23: Resistance to climatic
GB/T 37959-2019
Information model for containing process chamber IC equipment design
GB/T 37964-2019
Information security technology—Guide for de-identifying personal information
GB/T 37836-2019
Air filter plate made by polylactic acid/polybutylene succinate composite