selective replacement 中文意思是什麼

selective replacement 解釋
選擇交代
  • selective : adj. 1. 選擇的;挑選的;有選擇性的;淘汰的。2. 【無線電】選擇性的。adv. -ly
  1. Moreover, hrtem observations indicate that the process is very selective : even in apparently homogenous illite or i / s, some crystals went opening and some remain unchanged. and the replacement of k cations by alkylammonium cations is not restricted to crystal edges, but extends to entire interlayer. the above facts are the basis of alkylammonium cations method applied to the diagenetic age of sedimentary rock

    Iaa法是以沉積巖的粒度?年齡譜為基礎的,利用這種方法可以獲得同一樣品不同粒級伊利石的年齡,隨著粒級的減小,樣品的年齡也減小,當碎屑伊利石的含量趨于零時,可以得到自生伊利石的成巖年齡;烷基胺陽離子取代法是一種化學方法,利用烷基胺陽離子的選擇性替代性,可以去除碎屑伊利石成分中的k離子,從而能夠獲得自生伊利石的年齡。
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