![]() Coaxial communication cables—Part 1-108: Electrical test methods—Test for characteristic impedance, phase and group delay, electrical length and propagation velocity 同轴通信电缆 第1-108部分:电气试验方法 特性阻抗、相位延迟、群延迟、电长度和传播速度试验 |
![]() Information technology—Information device intelligent grouping and resource sharing-Part 403: Remote AV access profile 信息技术 信息设备资源共享协同服务 第403部分:远程音视频访问框架 |
![]() National Food Safety Standard - Determination of B-group and G-group Aflatoxins in Foods 食品安全国家标准 食品中黄曲霉毒素B族和G族的测定 |
![]() Non-ionic surface active agents - Polyethoxylated derivatives - Iodometric determination of oxyethylene groups 非离子型表面活性剂 聚乙氧基化衍生物中氧乙烯基含量的测定 碘量法 |
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