?? ?????????????????
![](https://image.chezhanri.com/2019/0711/20190711112213504.jpg)
????:1?????????:??100???????
2????????
3?????
4?????
5??????????
??????????,?????????????????700MHZ???????????????,?????????????????????????,?????????????02002862??4?5?6?7????????????
(???? ?????????????? ???? ??? ???)
??:????