???????!????????!??3D???????δ????????????????η??????????3??29??????14??????????η?????????????????????????????????????????????????????3D??ε?????????!
????????????????????????“???????”???????;??????????????????????“???????”?????????????????????????3D??Ρ?????????????????????????г???籩!
??????? ??????!
???е?????????δ??棬???е???涼?????????????????????????е????????????е???!
?????????????????У?????????????????????????????????????????????????????????????????????????δ?????ó?????????ó????????????????????鵽?????????????????????????е?????????????????е???!?????????????????????????????е?????!???????е????!??д?μ?????!??????????——?????????!
??3D??? ??3D????!
?????3D??????3D??Σ??????t????????????????????????????????????????2D???????“????????”????????????????2D??????????????????????????ε????2D??????????????????????95%??????!??д????????淨(jìng)????????????????????????е????????2D????????“3D???”????????????????????!???!