?? ????????????????
????:1???????:?????
2?????????
3?????????
4?????????
5???????200??500
????????????? ??? ? ??
????????????????????14?????“??”?
?????????????????????
?? 1/612????????????????19??,???????????,???????????????????,???,??????????????????????????2019?????12??????30??????????????????,5????,????????????5G???????????????
????:?????????????????
???? ?