随着土壤流失程度的增大，流域不同土地利用状况下的A层土壤颗粒粒径分选系数降低。
With the increasing of soil loss, the sorting coefficient for soil particle diameter of a layer decrease in different types of land utilization.
沉积物粒径变化较大，分选差。
储层物性受岩石结构如粒径、分选等控制，也受胶结物含量及溶解作用等控制。
The factor controlled the reservoir properties are the textures of the rocks such as grain size and sorting, cement content and dissolution.
采用气流分选技术对破碎解离后的废弃印刷线路板进行分离富集，重点考察了不同粒径下气流分选富集金属的效果。
The pneumatic separation technology for the separation and enrichment of metal in the waste printed circuit board scraps is investigated.
采用气流分选技术对破碎解离后的废弃印刷线路板进行分离富集，重点考察了不同粒径下气流分选富集金属的效果。
The pneumatic separation technology for the separation and enrichment of metal in the waste printed circuit board scraps is investigated.
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