Prior to this, medical telemetry devices had been operating unprotected from interference either on vacant TV channels or on special channels reserved for low-power operation.
此前，医学遥测设备的运行没有得到保护，可能受到空白电视频道或为低功率工作预留的特别频道的干扰。
2
But for CNC ambipolar unit, the side of operation manage statistic analysis is vacant, so studying feasibility and disquisition of this system is very important.