?? ????????!?4000????????
????:1????????????:??????
2?????qt???
3???????????
4??????98??
5????????
???,??,??????????,????????????????????12.49????,????? 1.13????????????m3,??1.118?????????????????????m3 ,??????????? 40 ???
?????????????????????,?????????????????,??????????????????200~300kg/?400kg/??,??,?????????????????,?????
??:????????????????????