“?????????????????”????

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

?????????8??????2???? (????????????????????? ????)?????????????????????,“????????????????????????????”8?????2?,?????????3D??,???????????????????

???????????,“??????????”??,????????????????????????????3D?????,?????“?”???????“??”?6???????????28????????????7???????????21????????,????3?,??????????????????

??????,??3D??????,????????????,???

8???2??????????????????,“?????????”????????????????????????? ?????? ??

???????????,“??????????????”??,?,???,?????????

?,?????????????????????,??,???????,??????????????

?,???2019?,???????,???????????????????????????????“???????????????????????”?????????????,????,“???3D???????,???????????????????,?????????,?????????”????

????????????????,?????????????????????,????????“????,????,????????????”

?????????????????????,?????,???????????????????,??????????,????????????????

????????????????????????????????(???????????)

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