???????????0.7*1.219*2????·?????÷????????????????????????
??·????????????????????????
6??1800??8000 35??
6??1800??8000 80??
6??1800??8000 21??
6??1800??8000 80??
6??1800??8000 65??
8??1800??8000 35??
8??1800??8000 80??
??·????????????????????????
???????????????????????????????壬????????????????????????????????????β????q????????
????????????????????í??????????A3q?????????????????16q????????????????12Mnq??12MnVq??15MnVNq??16Mnq??????????????4.5~50?????
??·?????????????????????????
?????????????????????????????????????????????????????7.6??????????????????????????????????????????????????????????????7????????????????????????С??????????????ó?????????????????????????????????·???????????????????????????г???????????й??????????棬??ò??????д??????????????????
???????????0.7*1.219*2????·???????????????????????????????????
