??????????(????)?

??

?2???????????4?? ???????????????:????????2?????3?,??????(??????????)?????,???????“M23????????????”??(??????)?,????2?4??

?????????,???????,??,???????900??“M23??????”?????(?)?,?????2900??????

?,?????????,??,????(????????)???????,????

?????,?(?)??

?,????????(???????????)?????????????,????????????????“M23????”???????????,?????????,?????????????(??)????????????????????????“M23?”????????????(???????)?,?1994???

??(???)??,???????????(???????????)??,?????????????????(??)???(????????????) ???????????:??????????

?????????

???????????????(????)??????

????????