![]() Industrial-process control valves--Part 8:Noise considerations--Section 1:Laboratory measurement of noise generated by aerodynamic flow through control valves 工业过程控制阀 第8部分:噪声的考虑 第1节:实验室内测量空气动力流流经控制阀产生的噪声 |
![]() Textiles--Terms of textile material properties and test--Part 3:general 纺织 纺织材料性能和试验术语 第3部分:通用 |
![]() Industrial automation systems and integration--Product data representation and exchange--Part 31:Conformance testing methodology and framework:general concepts 工业自动化系统与集成 产品数据的表达与交换 第31部分:一致性测试方法论与框架:基本概念 |
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