???:??????
???:???????????
??2G?3G???????????
????????????????????
???????????80?????????
????:????????????????
????????????????????
?????????????:??????
?????????????5???7???
??:???????????????????
??????????????
????????2017???
????????????????????
?????????:????????????
2?????????????????
??????????????????
???22+9????????36??????
???4?15?????????????VR??
???:???????????????????
???GPS??2????:????????
?????????????
2017???????????
????14:????????????
??????????????????????
????????4????????????
?????:??????????????