| 1. | At last , we used ferrite to avoid the disturbance form metal to the electromagnetic field , and the magnetic antenna can be fixed on the metal directly , then that ensured the running reliability of the system
最后采用铁氧体防大块金属对电磁场的干扰，使得磁性天线可以安装在金属表面，从而保证了系统稳定可靠的工作。 |
