???12*1.8*7????·?????÷?????????????????
??·????????????????????????<BR> ????????????????????????????????????????????????????????????????Щ????????????????????????????????????????????????г????????????????????????????<br><br>??????·?????????????????<br><br>??·????????????????????????8??1800??8000 80??<BR>8??1800??8000 35??<BR>8??1800??8000 80???
??·????????????????????????
????????????????????????????????????????????????????????????????Щ????????????????????????????????????????????????г????????????????????????????
??????·?????????????????
??·????????????????????????
8??1800??8000 80??
8??1800??8000 35??
8??1800??8000 80??
8??2000??8000 32??
8??2000??8000 42??
??·?????????????????????????
????????е???????????????10??28??,?й????????Э??(?????и?Э??)???鳤??????????????и?Э??????????????????,?????????????????????λ????,?????????????????????????????????,??????????????,?????????????????????????,????????????????
???12*1.8*7????·????????????????????????????