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数字多用表校准规范
Rule for the Digital Multimeter Calibration
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频谱分析仪通用规范
General specification for spectrum analyzer
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电能信息采集与管理系统 第4-2部分：通信协议－集中器下行通信
Data acquisition and management system for electrical energy.Part 4-2: communication protocol-concentrator downward communication
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电能信息采集与管理系统 第3-6部分：电能信息采集终端技术规范-通信单元要求
Data acquisition and management system for electrical energy.part 3-6: technical specification of electrical energy data acquisition terminal-communication unit requirement
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GW9005A型射频微带隔离器详细规范
Isolator,RF,microstrip,type GW9005A,detail specification for
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J113FZY55-39和J113FZY65-39型中频轴流风机详细规范
Miniature medium frequency axial blowers,type J113FZY55-39 and J113FZY65-39,detail specification for
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