The choice of this enclosure material responds, on the one hand, to its role as a solar filter offering at the same time porosity, light entrance and ventilation to the elevator case.
外围护结构材料的选择，一方面，由于孔隙率的控制使其成为太阳滤波器，可以照入一些阳光，照亮入口空间，也有利于梯井内的通风。
Experiments showed decreased porosity of the filter bed along the filtering direction.
试验发现，短纤维束滤料滤层的孔隙率沿过滤方向由大到小，为变孔隙滤层。
The target porosity and thickness of pavement of the permeable asphalt mixture on the basis of the factors such as reducing the runoff, the filter ability of soil base and pavement overflow.
基于减小地表径流、土基渗透能力及铺装溢流量等方面因素，设计透水性沥青混合料的目标孔隙率及铺装厚度；
The porosity, pore diameter and solubility of ceramsite filter made by these two methods were analyzed and compared.
研究添加成孔剂法制备的有球形宏观孔的多孔氮化硅陶瓷在不同孔隙率和孔径下的介电性能。
The operating principle of Sunshine is to used vacuum to suck the high temperature oil through the strong sorption filter compound and perfect porosity filter paper .
中天牌煎炸油过滤机利用真空抽吸的原理，让高温煎炸油通过吸附力极强的助滤剂和孔隙率极高的过滤纸。
When the dense net was used as filter medium for filter design, the porosity, as one of the important performance levels of the dense net, could not be found.
当它作为过滤介质进行过滤器设计时，查不到密纹网的一个重要性能指标—孔隙率。
And then, with a splash of colour filter paper on how to evaluate the coating porosity.
然后以滤纸上有色斑色的多少来评定镀层孔隙率。
And then, with a splash of colour filter paper on how to evaluate the coating porosity.
然后以滤纸上有色斑色的多少来评定镀层孔隙率。
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