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GB/T 15879.4-2019
半导体器件的机械标准化 第4部分:半导体器件封装外形的分类和编码体系
Mechanical standardization of semiconductor devices—Part 4: Coding system and classification into forms of package outlines for semiconductor device packages
GB/T 37983-2019
Testing methods of X-ray diffraction for determining the orientation of crystal materials by rotation
GB/T 37990-2019
Technical requirements of anti-washout admixture for underwater concrete
GB/T 37998-2019
Evaluation of Chinese language and culture learning resources in practice
GB/T 37890-2019
Rubber-or plastics-coated fabrics—Test method for wicking of the cloth
GB/T 37739-2019
Information technology—Cloud computing—Platform as a service deployment requirments
GB/T 37737-2019
Information technology—Cloud computing—General technique requirements of distributed block storage system
GB/T 37740-2019
Information technology—Cloud computing—Guide for application and data migration between cloud platforms