Juxiandong cave,the longest sea quartzite cave in the world,is the result of marine erosion along a cragged narrow fault.A comprehensive assessment indicates that Changdao Is...

 
  • 13處主要地質(zhì)遺跡的美學(xué)價(jià)值半定量評價(jià)表明高觀(guān)賞度者達69%25。
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