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2025????????2?8???????????,???????2???,????????

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???(????)??2010??????????(DEM),?????????????????5??????????????????????????DEM??,???,?????????DEM???????0.1??????????????(?DEM????)?“??????,???????????????,???????????????????DEM????,??????????????????”???,?0.5??????????????????????

??,??DEM???????????DEM??????????????????????,????,????????????58.7?????????????????,??????22.4??

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