?? (??)????????“?”?????:??
![](http://n.sinaimg.cn/news/transform/200/w600h400/20180613/uBe4-hcwpcmq0193601.jpg)
????:1?????:???????
2?????
3????????
4???????????
5????????
????????2????12????(???)?????,????????????????,?LED?????……???????????????????,?,??????????
????????????,???????????“??????”??????????????«?????»,????????????“????,???????????????????????????????????,??????????”????????,?????
2?12???????????????,??????????“???????????”??????????,????,????????????????,????????????????????,???????
“???????????????,??”??,?????,???????????????????
??,??
?????,??????????????????,“???????????”????????????
????????????,???????????????????,????????????12?????????????,???
![](http://i2.chinanews.com.cn/simg/ypt/2025/250212/70e7328d-1032-44ce-9a2d-00a70219b6a3_zsite.jpg)
?????,“???????”??,???????????????“?”????????????????????,????????“????”,?????????????
“???????????2?????????,?????”?????,????????????????????,????????????,??????,????????????
????????,??????????????????????????????????????????????????……????????????,??,??????????????,?????????????
![](http://i2.chinanews.com.cn/simg/ypt/2025/250212/e6870988-6475-4b10-ad8e-341f76302327_zsite.jpg)
????????????,?????,?,????????????;???????????????????“?????????????”??????????????“??”?????????????????????,??,????????????
???,??,??(?)
???????????:??????????