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

2???????????

3???????

4????????

5??????????

????????1??????????20??? ??????????????????,????????????,?«???????»(GB16171.1-2024),??????????2012????????????????????«????????????????»(GB 161712012),???????????????????????,???????,?????????

?????????????????????,??????????,2023??4.9????,??70%?????????????????????????,?????????????????????4??????????????????????????????????????,??,?????,???????????????????????????????,??,???

????,??????????????????50%?40%?70%?50%????????????????,???????????????????????,??????????,??????????????????????????2027?1????????????1?????????,??,?????????????80%?,?????​​​​ ????????????????:????????????