selective extraction 中文意思是什麼

selective extraction 解釋
選擇淬取
  • 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
  • extraction : n. 1. 抽出，拔出。2. 【化學】提取（法）；萃取（法）；回收物，提出物；精煉。3. 精選，摘要。4. 血統，家世，出身。5. 【數學】開方，求根。
  1. A new process of extraction distillation with salt was developed for the triple azeotropic system of methyl acetate - ethanol - water and the selective method of the solvent and salt were studied

    本文針對乙酸甲酯?乙醇?水三元共沸體系，提出了加鹽萃取精餾的工藝過程，並對鹽的選擇和萃取劑的選擇方法進行了研究。
  2. Solvent refined a refining technique to improve the quality of based oils using selective extraction of undesirable components by means of solvents

    溶劑精製-利用溶劑作為于段（利用溶劑方式？ ） ，有選擇性地萃取不需要的組份，進而提高基礎油質量的一種精製工藝。
  3. Water quality - determination of selected alkylphenols - method for non - filtered samples using liquid - liquid extraction and gas chromatography with mass selective detection

    水質.所選烷基苯酚的測定.使用液-液萃取和帶質量選擇檢測的氣相色譜法的無過濾樣品法
  4. Chemical analysis of zinc ores concentrates. accurate determination of zinc by complexometric titrimetry after selective extraction of zinc

    鋅礦石精礦的化學分析.鋅選擇提取後用絡合滴定法進行鋅的精確測定
  5. This article reviewed the synthesis of n - substituted aza crown ethers and their new applications to the field of selective complexation and extraction for metal ions

    摘要綜述了n -取代氮雜冠醚的合成和對金屬離子的選擇性絡合和萃取研究的新進展。
  6. Choosing the atomic absorption spectrometry as a basic analytic method and icp / ms as a contrast method and using the sequential selective extraction schedule, the characteristics of weak geochemical signals from deeply concealed deposits were studied in loess covered jiaolongzhang polymetallic deposit and zhangquanzhuang gold deposit

    本文採用原子吸收法作為基本分析方法，並以icp ms為比較方法，通過選擇性循序提取試驗，研究了甘肅蛟龍掌多金屬礦和河北張全莊金礦黃土覆蓋條件下，地表黃土中地球化學弱信息特徵。
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