???????????
?????????????
10??2000??8000 21??
10??2000??8000 70??
10??2000??8000 76??
10??2000??8000 70??
4??1500??8000 21??
?????????????
?????????????????·????????·???????纣??????????н???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
????????50*1600*C??q420qe???????????
