??3????????3???

????:???????????:?????????

?6??8??? (????????? ????)????8?,??,6??7??15?????????8??15???????,?????????,?????,?????????????259.0?????196.5????????????????

?????????????????,??????3??3??0.03?0.49???????????????8??15?,??????????????????????????????????????

8?????????15??,????13.13????????????(?18.5??????),?16900???

?????,??,?????24???????,???????????????????????????????????1?4??????????,??????????????;????????(?????) ???:???