GB/T 3836.11-2017
Explosive atmospheres—Part 11: Material characteristics for gas and vapourclassification—Test methods and data 爆炸性环境 第11部分:气体和蒸气物质特性分类 试验方法和数据 |
GB/T 7247.5-2017
Safety of laser products—Part 5:Manufacturer’s checklist for GB 7247.1 激光产品的安全 第5部分:生产者关于GB 7247.1的检查清单 |
GB/T 9258.3-2017
Coated abrasives—Grain size analysis—Part 3: Determination of grain size distribution of microgrits P240 to P2500 涂附磨具用磨料 粒度分析 第3部分:微粉P240~P2500粒度组成的测定 |
GB/T 3836.24-2017
Explosive atmospheres—Part 24: Equipment protection by special protection “s” 爆炸性环境 第24部分:由特殊型“s”保护的设备 |
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