?????????????
4??1500??8000 21??
10??2000??8000 70??
4??1500??800035??
4??1500??8000 80??
8??1800??8000 70??
6??1800??8000 80??
????????
???????????????????????δ???????????????????????棬???????????????????????????????????????
???????????????????????????????????????????? ??
??????????????
????????????????????????????г??????????????????????????????11???????????????????11??????????????????????????????120????
?????????36*1800*8m??q550qe??????忹??????μ???