selective extraction meaning in Chinese

选择淬取
选择提取
选择性抽提
选择性提取

Chemical analysis of zinc ores concentrates . accurate determination of zinc by complexometric titrimetry after selective extraction of zinc
锌矿石精矿的化学分析.锌选择提取后用络合滴定法进行锌的精确测定
Solvent refined a refining technique to improve the quality of based oils using selective extraction of undesirable components by means of solvents
溶剂精制-利用溶剂作为于段(利用溶剂方式？ ) ，有选择性地萃取不需要的组份，进而提高基础油质量的一种精制工艺。
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
本文采用原子吸收法作为基本分析方法，并以icp ms为比较方法，通过选择性循序提取试验，研究了甘肃蛟龙掌多金属矿和河北张全庄金矿黄土覆盖条件下，地表黄土中地球化学弱信息特征。