?? ????????!?4000????????
????:1????????????:?????????????
2?????????
3???????
4????????8?????
5??????95?98??
?,???????????????????,???????????????????????????????????????????,??12.49??,?? 1.13??????m3,???1.118?????m3 ,? 40 ??????????????????
?????????????????,????,????????????????????200~300kg/???400kg/??,????,????????????,???????????????????
???:????????????