GB/T 20674.1-2020.Plastics pipes and fittings-Equipment for fusion jointing polyethylene systems-Par...
GB/T 5862-2020 农业拖拉机和机械 通用液压快换接头
GB/T 5862-2020.Agricultural tractors and machinery-General purpose quick-action hydraulic couplers. ...
GB/T 39925-2021 农业固定设备 畜牧业数据通信网络
GB/T 39925-2021.Stationary equipment for agriculture-Data communications network for livestock farmi...
GB/T 28450-2020 信息技术 安全技术信息安全管理体系审核指南
GB/T 28450-2020.Information technology-Security techniques-Guidelines for information security manag...
GB/T 20674.2-2020 塑料管材和管件 聚乙烯系统熔接设备第2部分:电熔连接
GB/T 20674.2-2020.Plastics pipes and fittings- Equipment for fusion jointing polyethylene systems-Pa...
GB/T 20996.2-2020 采用电网换相换流器的高压直流系统的性能 第2部分:故障和操作
GB/T 20996.2-2020.Performance of high-voltage direct current (HVDC) systems with line-commutated con...
GB/T 20261-2020 信息安全技术 系统安全工程能力成熟度模型
GB/T 20261-2020.Information security technology-System security engineering-Capability maturity mode...
GB/T 33588.4-2020 雷电防护系统部件(LPSC)第4部分:导体的紧固件要求
GB/T 33588.4-2020.Lightning protection system components( LPSC)-Part 4: Requirements for conductor f...
GB/T 35381.14-2020 农林拖拉机和机械串行控制和通信数据网络第14部分:顺序控制
GB/T 35381.14-2020.Tractors and machinery for agriculture and forestry-Serial control and communicat...
GB/T 33588.2-2020 雷电防护系统部件(LPSC)第2部分:接闪器、引下线和接地极的要求
GB/T 33588.2-2020.Lightning protection system components (LPSC)一Part 2:Requirements for air-terminat...
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