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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Pattern differentiation can be performed in a coherent Optical processing system if a composite sinusoidal grating is used as a filter.

利用余弦型的复合光栅作为滤波器，在相干光处理系统中可对图像进行微商。

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The removal effect of ammonia nitrogen and organic material with composite attapulgite filter by static adsorption experiment and dynamic filtration experiment was studied.

通过静态吸附实验和动态过滤实验研究复合凹凸棒滤料对氨氮和有机物的去除效果。

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The first permanent colour photograph was taken by Thomas Sutton who was working with Clerk Maxwell and is a composite of three black and white pictures, each one taken through a red, green or blue filter.

BBC: Pioneering colour photography