??·????????????????????????
8??2000??8000 35??
8??2000??8000 42??
8??2000??8000 21??
8??2000??8000 32??
12??2000??8000 79??
??·????????????????????????
??????????b??
??????????????У??????????????????????????????????????????????????С????????????????п???????????????
??Pb??????????????????????Fo??????????????????????b= Pb/Fo ??MPa????
????????
??????????????????????????????????
???????????????????????????????????????????
?????????????????????????????????????????????л????????
??????8*1810*8000??q420q??·?????????????????????С??????
