Osmosis is a natural phenomenon of water through the membrane to high solute concentration from low solute concentration on one side, until the solvent chemical potential balance.
渗透是一种自然现象：水通过半透膜，从低溶质浓度一侧到高溶质浓度一侧，直到溶剂化学位达到平衡。
2
Unlike conventional solvent extraction, membrane extraction is a dispersion-free extraction process.
与通常的溶剂萃取过程不同，膜萃取过程中没有相分散行为发生。
3
The characteristics and applications of complexation extraction process, duel solvent extraction process, membrane extraction process and extraction displacement process are discussed.