GB/T 39892-2021.Specification of reporting and processing of motor vehicle product defect clue. 1范围 ...
GB/T 25387.2-2021 风力发电机组 全功率变流器:第2部分:试验方法
GB/T 25387.2-2021.Wind turbines generator system-Full-power converter-Part 2 :Test method. 1范围 GB/T ...
GB/T 25387.1-2021 风力发电机组 全功率变流器第1部分:技术条件
GB/T 25387.1-2021.Wind turbines generator system-Full-power converter-Part 1:Technical condition. 1范...
GB/T 39789-2021 焊缝无损检测 金属复合材料焊缝涡流视频集成检测方法
GB/T 39789-2021.Non-destructive testing of welds- Eddy current-video integrated testing method of me...
GB/T 39959-2021 液体泵和泵机组 噪声试验方法2级和3级
GB/T 39959-2021.Liquid pumps and pump units一Noise test code-Grades 2 and 3 of accuracy. 1范围 GB/T 399...
GB/T 3480.2-2021 直齿轮和斜齿轮承载能力计算第2部分:齿面接触强度(点蚀)计算
GB/T 3480.2-2021.Calculation of load capacity of spur and helical gears-Part 2: Calculation of surfa...
GB/T 39743-2021 滑动轴承 热塑性塑料轴套尺寸与公差
GB/T 39743-2021.Plain bearings-Thermoplastic bushes-Dimensions and tolerances. 1范围 GB/T 39743规定了依据IS...
GB/T 7308.1-2021 滑动轴承 有法兰或无法兰薄壁轴瓦第1部分:公差、结构要素和检验方法
GB/T 7308.1-2021.Plain bearings-Thin-walled half bearings with or without flange-Part 1:Tolerances ,...
GB/T 19934.1-2021 液压传动 金属承压壳体的疲劳压力试验 第1部分:试验方法
GB/T 19934.1-2021.Hydraulic fluid power-Fatigue pressure testing of metal pressure-containing envelo...
GB/T 39926-2021 液压传动 滤芯试验方法热工况和冷启动模拟
GB/T 39926-2021.Hydraulic fluid power-Filter element test methods-Thermal conditioning and cold star...
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