中国国家标准名称3 ... 插齿机精度 Gear shaping machines--Testing of the accuracy 测量、控制和试验室用电气设备的安全要求 第1部分: 通用要求 Safety requirements for electrical equipment for measurement, control, and laboratory use Part 1: General requirements 工业自动化仪表气源压力范围和质量 Pressure range and quality of air supply for the industrial process measurement and control instruments ...
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