Draft beer refers to the one with certain biological stability, which adopts the method of physical filter with no Pasteurization or instant high temperature sterilization.
纯生啤酒是指不经过巴氏灭菌或高温瞬时灭菌，而采用膜过滤除菌，达到一定的生物稳定性的啤酒。
The control of hydrogen sulfide using biological fixed-film filter is an economical and effective method.
利用固定生物膜滤池控制硫化氢气体是一种经济有效的方法。
The experimental method of aeration biological filter-chemical precipitation-sand filter composite process and water quality situations in experiment are introduced.
采用脉冲循环流化床与物化沉淀池的组合工艺对某公司的印染废水进行了处理。
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