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直接动作电测量记录仪
Direct acting electrical measuring recorders
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工业检测型红外热像仪
Industrial inspecting thermal imagers
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自动抄表系统低层通信协议 第1部分;直接本地数据交换
Automatic meter reading system lower layer communication protocol.Part 1:direct local data exchange
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电测量指示和记录仪表及其附件的安全要求
Safety requirements for indicating and recording electrical measuring instruments and their accessories
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数字化继电保护试验装置技术条件
Technical specifications of digital test equipment for relay protection
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