?? «??2»??????????
![](http://n.sinaimg.cn/news/1_img/vcg/72f96829/330/w906h1024/20181126/Gas5-hpevhck6867459.jpg)
????:1??????????:???????????
2?????????
3??????????
4?????
5????????95
??????2???13??? (??????)?«?????????»(????«?????????2»)?,?????????“???????”???????????????
?????????????????????,?????????«?????2»???????3D??IP??????????????????????????????,??????????????????????,????????????????60??????????????????,????????60%??,????????8000???
“?????,??????‘???’???”??????????,??“??”????????????????
?????????????“???????”?????????????????????,“????”“«?????????»????”???????,????????,???????????????????????10???,??????IP????????????
“?????IP???”??,?????????????????????,????IP???????????????????????
“??????IP???????,???”???,?????,????????????IP????????(??) ?????:?????