大小单双正规平台
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CA11E电压电流回路校验仪：具有电压/电流的产生和测量功能4-20mA和1-5V直流步进输】出20mA接收功能斜坡输出功能LCD显示自动关机功能1.5V 碱性电池供电或交流适配器超长测试线
