Refer to foreignpotented techniques, the principle of deoiling by extraction, technological process, and Seldrion of extraction solvent and equipment are introduced.
本文结合国外专利技术，介绍了萃取法除油的原理、流程及萃取剂和设备的选择。
2
A pretreatment process before the surface of the glass fiber is plated with tin and nickel mainly comprises the following steps of: deoiling, coarsening, sensibilizing, activating, and the like.