Filtering

例句:

• This is done by attaching to the service pipe tanks filled with filtering material, through which the water flows before reaching the boiler. 威廉·亨利·杜利特. 世纪发明.
• After filtering it is again boiled, and if any scum or impurities appear on the surface they are removed, when the juice is to be bottled, corked tightly, and should be left for one year. 威廉K.戴维. 智者、化学家和伟大医生的秘密.
• Let stand for a few days and filter through a felt bag or filtering paper. 威廉K.戴维. 智者、化学家和伟大医生的秘密.
• Laboratory processes like distilling, filtering, crystallization, sublimation, became known to the Europeans through them. 李贝. 西洋科学史.
• This is accomplished by a central pumping and filtering plant and the return of the oil from all parts of the works by gravity. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.

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