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geochronological 英ˌdʒiːəʊkrə'nɒlədʒɪ美ˌdʒiːoʊkrə'nɒlədʒɪ BNC¹⁷³⁹⁹⁵⁺² 基本例句 n.地球纪年学地质年代学形容词geochronologic副词geochronologically名词geochronologist If chert does not contain impurities and the age spectrum is very precise, the minimum apparent age in middle temperature may have geochronological implication. 当燧石纯度很高,加热阶段划分得很细时,马鞍形谱线中温区间最小视年龄具有某种年代学意义。 cagsbulletin |