?? ????????ICPD?????
????:1???????:?????????
2??????
3?????????
4???100??????
5?????
?????(ICPD)?30???????????????????,???????????????6?????????????15???????????????????????????????????80?????????????
??1994?????????????????,???????????????????????
????????????????????,????30???«??»????????,???
?????????????????????????,????????????,?????????????????????????,????,??????????????????(???????? ????????? ???????? ???????????????)
??:????