![]() Hydraulic transmission connection-flange connection-Part 3: 42-MPa, DN25~DN80 square series 液压传动连接-法兰连接-第3部分:42-MPa、DN25~DN80方形系列 |
![]() Determination of certain substances in electronic and electrical products-Part 12: Simultaneous determination of polybrominated biphenyls, polybrominated diphenyl ethers and phthalates in polymers by gas chromatography-mass spectrometry 电子电气产品中某些物质的测定-第12部分:气相色谱-质谱法同时测定聚合物中的多溴联苯、多溴二苯醚和邻苯二甲酸酯 |
![]() Medical gas pipeline systems - Part 1: - Pipe systems for compressed medical gases and vacuum 医用气体管道系统-第1部分:-压缩医用气体和真空用管道系统 |
![]() Fire hazard tests for electrical and electronic products - Part 23: Test flame - 500W vertical flame test method for polymer tubular materials 电工电子产品着火危险试验-第23部分:试验火焰-聚合物管形材料500W垂直火焰试验方法 |