???????? ??????????

????:???????:????

???1??8?? (???????? ???????)?(PUB)?????????????(?“??”)7???,????????????????????,????????????????,????,???????????????????????????????????????????????

???????????? ???

????????????,????,????????????????????????????30???????/?,????70?????????,???+??????,??????????

?,?????????????30????“??”???????????

?????1990????????,????????4???????????/???????????,???????????12????????????????????,??????“??”????,???????????????22%???????

“???????!”??????,??60?26????????????????????,???75%????????????????86%??60%?????????80%????????

???????,??????“???”?????????????????,??3.24??,??????10????????????/?????,?????????????????????????,?????5G??????????????(??)

?????????????:????????