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ageing boundary造句

"ageing boundary"是什麼意思  ageing boundaryの例文  
造句與例句手機版
  • Abstract : based on the isotopic dating data of volcanics and recent research achievements of age boundary between jurassic and cretaceous systems , it is suggested that the volcanic series in shengyuan basin must be attributed to lower cretaceous
    文摘:本文根據盛源盆地火山巖同位素年齡數據和侏羅-白堊系界線年齡的最新研究成果,認為盛源盆地火山巖系的地層時代應屬早白堊世。
  • It's difficult to find ageing boundary in a sentence. 用ageing boundary造句挺難的
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