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

2????????

3?????????

4???????????

5????????

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

???????????????????????????????,????1????????????????????500????????????????,???????????????,????? ???????????????????,??????????????????

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

?????4??????????,?????????????????????,?????????,??,???????????????,???,??????

?????????????,????,????LED?????????????,??????????????????????“???????”???????,????4??,???????????????????????????????31?????,????????45.6%?

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

?????:?????????????????????