Q345qD??????????????????
10??2000??8000+ 70??
10??2000??8000+ 76??
10??2000??8000+ 70??
4??1500??8000+ 21??
10??2000??8000+ 70??
4??1500??800035??
4??1500??8000+ 80??
8??1800??8000+ 70??
6??1800??8000+ 80??
Q345qD??????????????????
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????????????????????????A3q??????????????16q????????????????12Mnq??12MnVq??15MnVNq??16Mnq????????????4.5~50?????
Q345qD???????????????????
?и?Э???????????4???????????????????215.15?????????????????????????????????
18.75???;????????????????????????4?·??????????????????????????????????????????
????????????????????????????????????????????;??????й????????????????????γ?????
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