????:1??????????:?????V

2?????92?

3???????????

4???????

5??????

?“???????”????,???,???????????????????,??2???5?????,????????????

??(?/??????????????-?)????,?,??????????????,???282.77????????,??10Mpa?

??81.52??,????????,??24.1?????????????????????????????????????,??????????48.7%(??12?????????????),??47.9%(????11.8???????),????????????????29.1%(??????7.2?????),??20%;??8????,?????????30%,????????10???

???????,????,????220???????,????????70%,?????2027?????,??,???(?? ???????????????????????? ???? ???????????????????)

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