??????????????????????
20*2200*10300+ 32??
25*2200*12050+ 90??
30*2200*8000+ 98??
35*2090*10160+ 65??
40*2200*8000+ 21??
45*2200*8000+ 98??
????????
?????????????????λ??????????о???????????????????????B??????? ???塢????塢??????????塢??????????????塢????????? ???????????????????.????.???.????.????.???????и??????????????????????????????????.???.????.????.????.???.????У???????????????????????????ó????
????|?????|?????|?????|?????|?????????|?????????|????|?????|???????????|?????????|???
??????С???????????????????????????????????????????????????????????????????????????????????????????????????????????????????
???????????????????????
?и?Э?????????????10?????????????????????1378.8??????????????2.12%??????????????θ???????????????????3?????????????λ1451.36???????????????????????棬??????????????????????????????????裬10?·???????????
???????? ???????лл ?? ????? ????????????????????
?????????8mm???????????????????????