???????????????
6??1800??8000 98??
6??1800??8000 32??
6??1800??8000 98??
6??1800??8000 70??
4??1500??6000 21??
5??1800??8000 32??
5??1800??8000 32??
8??1800??8000 90??
???????????????
???????????????????????????壬????????????????????????????????????β????q????????
????????????????????í??????????A3q?????????????????16q????????????????12Mnq??12MnVq??15MnVNq??16Mnq??????????????4.5~50?????
?????????????
????????????????
????????????????????????????????????????????????????????????????????????????????????????????????????????;?????????????????????????????????????????????????????
?????????????????7??q500qe??????????????????
