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

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

3?????

4?????????500???

5??????

?6???????????28?????? (? ??)“????????????????????”28????????????3D???????????,???????

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

6???28???????,“?????????????”????????????????? ??????????????????? ????????????

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

6?28?,“?????????”???????????????? ????????????? ??????

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

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

6??????????28?,“?????”?????????,??????????????? ????????????? ?????

????????????????????????????????6??28??????????????????7?21?????????????????,???????????????????????(??)

????????:??