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???9?30????????????? (???? ?????)???,1963???????????,?????????5000?,????

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??????,?????????????????20?????60?????80????????,????,??????????????,?????????????????????,????1??????????10?????,?????????????,?????????????????1????

1971???12?1??,??????????????????????????,?????????????50%?,????????????,???????????????????,???????????

“???????????,?????????????”????13??????“??????,?????,20??????????,30???????????????????”

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30???????????????????,?????30???“??????????,???????,?????????,?????????,????????”

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“??,?????????,??????,?????”????????????,???????????71????????????????????????????????????,??,????,??????????,????????????????“???????????,??,??????”

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????,????????????,???????40????????,??????????????1985???,??????????7.4??,??????,??????????,??????????????,???100????,??????????????“???1987???????,????????6????????????,????95%????????????”

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??????????,????70%?????????????????????????????????????30??????????????,???????“????”???,?????“?????????,?????????”

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