Oil film life, rate of oil film thinning, water-oil interfacial properties and their effects on demulsification of model petroleum emulsions ( O / W ) in the presence of demulsifiers are studied. 研究了破乳剂存在下油膜寿命、油膜薄化速率以及油水界面性质与破乳效果的关系。
Self-Emulsion-Base are ready-to-use products which can spontaneously form superior, extremely stable o / w emulsions merely by heating in the presence of water. 自乳化基质(Self-Emulsion-Base,SEB)是直接可以使用的软膏基质,将其直接与水一起加热即可自发形成稳定的水包油乳剂,方便生产。
Starwood will soon be able to count on two new brands, Element and Aloft, while W Hotels'expansion throughout EMEA will also surely make its presence felt. 喜达屋不久将来会更加倚重Element和Aloft这两个品牌,而WHotels在欧洲的扩张毫无疑问是使得大家感觉到它的存在。
The white-apricot ( w α) allele differs from the wild type white gene by the presence of the retrovirus-like transposable element copia within the transcription unit. 在果蝇中,杏黄色眼基因w~a和它的野生型白眼等位基因w的区别在于前者的转录单位中插入了反转录病毒样转座因子copia。
However, four groups of elements could influence the quality of events with structure " W ", which are positive / negative, definite object / indefinite object, presence / non-presence, with description / without description. 但是,其中有四组因素对VV式事件的性质会产生重要的影响,它们就是肯定/否定,定指宾语/不定指宾语,现场/非现场,有描写成分/无描写成分。