totally self-checking circuit的意思|示意

全自检电路 polarity checking circuit 极性检查电路 totally self-checking circuit 全自检电路 Checking Circuit Voltage &Resistance 检查电路电压和电阻 ..

全自检查电路 ... 错误检查电路 error checking circuitry 全自检查电路 totally self-checking circuit ; checking circuit 键盘检查电路 keyboard checking circuit ...