?? “??????”?????? 12?????21?
????:1??????????:?????????
2???????
3???????
4???98?
5????????
???12????????????????????21????????????(?????????????? ??)21?????????,??????????????3???,“?”?????????????,?????????
12?21??????????????,?3???,“??????????????”????? ??????????? ???????????“?????????”,???????????????????,??????????????,????10????????,???????????????????????????????
??,“????????????????????????,???????????,?,???,??,?????????”
???????????“?????????????????????????????”????? ?? ????????,???????????????,“??”??????????????,??1000??,???3000????????????
???????????,“???????????”??????,??????,????LED????????,????????????????????????,????????????????????
“???”??????,??? ???? ??????????????????????????,???????????????????????,????????,?“?????+?????????”???????????,???120???????????,??????????????????????????????,???????????,???????(???????????????)
???:??