?? ??????6.8??? ??180????
????:1??????:???????
2??????????????
3???????
4???????
5???????????
??12??????27???? ????:12??27?20??47???(???46.90?,??151.80?)???6.8??,??180??
??????????:? ????????????:????12??????27???? ????:12??27?20??47???(???46.90?,??151.80?)???6.8??,??180??
??????????:? ????????????:??????:1??????:???????
2??????????????
3???????
4???????
5???????????
??12??????27???? ????:12??27?20??47???(???46.90?,??151.80?)???6.8??,??180??
??????????:? ????????????:??