12??2??20*1800*8m??201??·?????÷???????????в???????
?????·?????????????????
??·?????????????????????????
????С????????????????????????г???????????????????????????????????????????????????????г?????????????????????????????????????????????????????????????????г??????Щ?????????????????????????????????·????????????????????????????????????????????????????????????????????????????????????????????????????????????С???????????????????????????
??·????????????????????????
4??1500??8000 90??
4??1800??8000 32??
5??1800??8000 21??
5??1800??8000 90??
6??1800??8000 35??
12??2??20*1800*8m??q345qc??·??????????????????????в???????
