PCB工艺如果处理不当，可能造成射频电路的发射和接收无法正常工作。
If the processing of PCB craft is improper, it is impossible to result the sending and receiving of the radio frequency circuit work normally.
射频（RF）信号收发器是MRI 谱仪的重要组成部分，它负责MR 信号的接收和RF脉冲的调制发射。
RF signal transceiver is an important component of MRI spectrometer. It is responsible for the receive of MR signal and the transmit of RF pulse.
P CM遥测的传输质量与射频系统的发射和接收设备直接有关。
Transmission quality of PCM telemetry system is related to both the transmitting and receiving equipment of the system.
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