23?????,???????,???????,?????
??:???????“?????????????????????????????”???????? ??????????“????”????????????????:?????
??????1905?,????????????????????,?????????????????????2021?????????????????,????,?????4.7?,?????85?????,?60???7500????
?????????????,?????????56.4????,2015?????????,??510?????,?????????????????????270???????????????,???2280mm???,??????????????????????????,???????????
?
???? ????????????????????????
?????? ??
?????
?? ??
??????????? ??????????
?????
????
(????) ?????????:??????????????
?????????:??????1.5%??????…
20???????????????10??
???????????????????
??:?????????????????????
?????????????????????
?????????????:????????
?????????????
?????????:??????10????
6???????????????????
??????????????????
?????????????????????
2017???????????:???11?
??????????????“??”??
???????????????????
???????????????????
??????????????:??????????
«??»??90?????,?21????
???????????:??????????120%
??????????????????????
?????2??7??????????
???????:???????????
??????????“???”?????????
?????????????????????
?????????????????????
??31??????????23??????