extraction n. 1.抽出,拔出。 2.【化學(xué)】提取(法);萃取(法);回收物,提出物;精煉。 3.精選,摘要。 4.血統(tǒng),家世,出身。 5.【數(shù)學(xué)】開方,求根。 spirit of the first extraction 原汁酒。 a man of foreign extraction 外國(血統(tǒng)的)人。 extractions from a book 一本書的內(nèi)容摘錄。 an extraction of 81 percent 百分之八十一的出粉率,八一粉。 the extraction of root 【數(shù)學(xué)】開方法,求根法。
Factors affecting benzene product quality in extraction distillation unit and countermeasures 影響抽提蒸餾裝置苯產(chǎn)品質(zhì)量的因素及對策
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,并對鹽的選擇和萃取劑的選擇方法進行了研究。
This paper introduces several separation technologies for alcohol - water system , which include not only traditional azeotropic distillation and extraction distillation , but also new membrane separation techniques , such as membrane distillation , pervaporation and membrane contactor 摘要主要介紹了醇水體系分離的幾種工藝和新方法,其中包括傳統(tǒng)的恒沸精餾和萃取精餾等主流工藝,以及膜蒸餾、滲透汽化和膜接觸器等新型膜分離技術(shù)。