电压参考装置，伏特表，电池电压检测装置和无线通信设备。
Voltage reference apparatus, voltameter, battery voltage detection apparatus and wireless communication device.
电压参考装置，伏特表，电池电压检测装置和无线通信设备。
A voltage preference apparatus, a voltameter, a battery voltage detection apparatus, and a wireless communication device.
电压参考装置，伏特表，电池电压检测装置和无线通信设备。
A voltage preference apparatus, a voltameter, a battery voltage detection apparatus, and a wireless communication device.
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