???-17.8? ????????2????35???

????:??300???:???????150???

???????2?????8?(?? ?)??,??8???????,?-17.8??????????????-4.6?,???????,??????????35???????2????

8??????????????????????,????89?????????,?????57??????,???,??5??????,?1?,“???”??

???????“?????????”,???,????,???,????????,?????,????????????????????????,???????,??????????????????0???????,????????2???????????,?68??

??,?????????8??????????-4.6????2?????-4.6??,?1990??????????????2??1????(-6.2?)?

????,????????????8????,???????,???9??????-3?????????-5?,??,???-6???????????????????-8?,??????????10???????,???????????-1??-3?,????????,??-4??????????????-7?,????(?????) ???:?????