The selectivity of extractant is high and only Au, Pd , Hg ete. are extracted.该萃取剂选择性高,它仅萃取Au 、 Pd和Hg等几种元素.An extractant - screening method with a vapor - liquid equilibrium apparatus in the extractive distillation was i...

电解提取法，电解萃取...

不可萃取...

extractions的音标：...

hydroextraction的音标：hydroextraction的英式发音音标为：[haɪdrəʊɪkst'rækʃn]hydroextraction的美式发音音标为：[haɪdroʊɪkst'rækʃn]...