轿车收音机。同轴天线连接器。第2部分：特征值、性能要求和试验。技术勘误1。
Car radios - Coaxial aerial connectors - Part 2: Characteristic values, performance requirements and tests; Technical Corrigendum 1.
低压电涌保护装置。第21部分：与电信和信令网络连接的电涌保护装置。性能要求和试验方法。
Low voltage surge protective devices - part 21: surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods.
试验证明，方案1生产的传动轴管综合性能最好，满足使用要求和取得较显著的经济效益。
The experiments show that the comprehensive properties of pipes produced by the process no. 1 can best meet the requirements of application with evident economic results.
试验证明，方案1生产的传动轴管综合性能最好，满足使用要求和取得较显著的经济效益。
The experiments show that the comprehensive properties of pipes produced by the process no. 1 can best meet the requirements of application with evident economic results.
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