Effect of packing material size is mainly on the column pressure and column efficiency.

填料粒径主要从柱效和压力两方面影响着制备色谱的应用。

The effect of hydraulic retention time (HRT), plant, packing and hydraulic flow state on purification efficacy and oxygen state was studied in artificial wetland.

试验研究了人工湿地中水力停留时间、植物、填料和水力流态对净化效率和氧状态的影响。

The real effect the Hydraulic load does for the effect of water biological pre-treatment by elastic packing.

水力负荷的大小对于弹性填料生物预处理净化水质的效果随不同项目有不同的影响。

This article try to find out the effect of the packing materials and film base to conservation character of panchromatic portrait film through doing the artificial aging experiment .

本文主要是通过做人工老化实验，探索包装材料与片基对人像胶片保藏性能的影响。