???????????
??????????????
???????г?????????????????????,??9???????????5????????????,??8?????л?????????9???,22??????5????????????????1150.71???,???????й????????Э???????????????????????????1157.16??????????????
?????????????
14??2000??8000 35??
14??2000??8000 70??
8??2000??8000 21??
8??2000??8000 70??
8??2000??8000 32??
8??2000??8000 70??
10??2000??8000 21??
?????????????
???????????????????????????壬????????????????????????????????????β????q????????
????????????????????í??????????A3q?????????????????16q????????????????12Mnq??12MnVq??15MnVNq??16Mnq??????????????4.5~50?????
??????????18*1600*C??Q420q????????????????
