a filter meaning in English
a滤光镜
Examples
- A filter traps dust from the air .
过滤网可存住空气中的尘埃。 - Under appropriate conditions a multilayer may also be employed as a filter .
在适当条件下，多层膜还可作滤波器。 - It is possible to use a plutonium foil as a filter to remove the second-order contamination .
可用钚箔作为过滤器消除二级干扰。 - A satisfactory approximation to monochromatic light can be obtained with a filter placed in front of the arc .
在碳弧前面放一个滤光片就可以得到令人满意的近单色光。 - The crude dye is collected on a filter and then recrystallized from ethanol containing a small amount of piperidine .
粗染料过滤，然后在少量含有哌啶的乙醇中重结晶。