?? ???????????????????

????:1????????:???????
2???????
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??,????,?????????(???? ?????????? ??????? ???????)
??:????