??????????? ??? | ??????? ????????

?????????,“??,????”“??????,????”???????

???????,?,?????????????

????

???,????

??????????

???????????,????,??????????????????,????,????????????????

???????????????D,?????????,????

????,???D?????????????,??D????????????????

?????????

?????????????,??????????

??????

1.?

?:????,????????????????????????????????????????,???????????????1000~1200?????????????????,?????????

????????D:??D??????,???????????????????(???????20???)??D???(?????????????????????)???

?:?,????????????????,??????????????????????????????,???,??????

2.?????

?????:????????????????????????,?????????,??????,???????,????????,???

??????????????????:?????????????,?????????????,?????,???????

?????????:?????,????????,??????,??????????????

?????????????

?????

??

???????????,???????????????X???(DXA)????????????X????,??????????T????????=-2.5,?????

????????

????????

????

??,????????,????,?????????????????????????,???????,????????????

?????????:???????????+?????,?????????????

?????????:????????????????????????????????????,???,??????,?????????????,??????

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

??????????:??????? ??“???100?”

?? ???????????!????????????|????????

????:1????100?:????????

2???????

3???????

4???????

5???????????

??????????? ??? | ??????? ????????

?????????,“??,????”“??????,????”???????

???????,?,?????????????

????

???,????

??????????

???????????,????,??????????????????,????,????????????????

???????????????D,?????????,????

????,???D?????????????,??D????????????????

?????????

?????????????,??????????

??????

1.?

?:????,????????????????????????????????????????,???????????????1000~1200?????????????????,?????????

????????D:??D??????,???????????????????(???????20???)??D???(?????????????????????)???

?:?,????????????????,??????????????????????????????,???,??????

2.?????

?????:????????????????????????,?????????,??????,???????,????????,???

??????????????????:?????????????,?????????????,?????,???????

?????????:?????,????????,??????,??????????????

?????????????

?????

??

???????????,???????????????X???(DXA)????????????X????,??????????T????????=-2.5,?????

????????

????????

????

??,????????,????,?????????????????????????,???????,????????????

?????????:???????????+?????,?????????????

?????????:????????????????????????????????????,???,??????,?????????????,??????

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

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