????:1????????:????????

2???????????

3?????vx

4????????????

5???????

?1????????17?? (??????????? ?????)1?????17??,???????,???“????????????”??????????,10???????????????????????????????,?“????”??

??????,?????????,?????????????????800??????????,????????????????

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

????,?????«??»???????,???????????????2021???????,????«????????»?????????????,????????????????????????,???????3D???,?????,??,??????????????,???,???????????

?,????????????,?????????,???????70???

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

????,???,?????????????????????????????,?????????????????“??????”?????,?????,???????????????35%????

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

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

????????????????????“????”????????????,??????????????????,???,?????,??????????,??????????????????????,?????????????????(??) ?????????????????:???????????????????