During the dry season , soil particles and plant matter would have settled slowly to the bottom of the shallow lakes and swamps , eventually forming the blue clays and lignite 乾季时,土壤颗粒及植物缓慢沉淀到浅水湖泊及沼泽底部,最后形成蓝色的黏土及褐煤。
Screens , design sheds so 11 more easlly than flat screens , reduces frequency of cleaning - easy to empty large soil particles and not easy to jam wash and rinse arms nozzles 洗涤水槽过滤网孔大大小于洗涤碰嘴,保证了不锈钢喷嘴系统永不堵塞.坚固耐用,容易清洗
The relationship of soil particle - size distributions and soil water retention characteristics , saturated and unsaturated hydraulic conductivity were studied in the lab 本研究对陕西四种不同质地土壤的粒径分布与水分特征曲线及饱和、非饱和导水率的关系进行了研究。
According to the soil particle distribution theory and the fractal theory , this paper studied soil structural property of seven different forest types and grassland 摘要运用土壤粒径质量分布原理与分形理论,对淄川峨庄流域内7种林分和对照荒草地的土壤结构特徵进行研究。
However , for its thin thickness of bound water membrane for the surface of tamped soil particles , its small expulsive force between grains and fast resumption of the strength , tamped soil shows a good thixotropy 但夯后由于土颗粒表面的结合水膜厚度薄,粒间斥力小,强度恢复较快,因而又表现出较好的触变性。
It can be use as a parameter to describe the variety of soil texture . 3 . on the basis of the a & p model , soil particle - size distributions and soil bulk density data is translated to soil water retention characteristics A & p模型得出的四种土壤的水分特征曲线,在低吸力范围段可以较好反映土壤实际的土水势与含水量之间的关系。
There were evident differences of distribution of soil particle aggregation in soils developed from purple soils . the big soil particle aggregation occupied most of soil particle aggregation and they represented better character of aggregation 土壤中团聚体分布不均匀,大团聚体较多,团聚性好,由于土壤发育的母岩不一样,团聚体的水稳定性有很大的差异。
On the basis of the analysis of the test data , the additional force linearly increased with variation of water pressure in the aquifer , and increased with the increase of the depth and with the content of coarse soil particle in the overburden layer 试验结果表明:竖直附加力随含水层降压量的增大而线性增加,随深度增大而增大,随土层中粗颗粒含量增多而增大。
Capillarity ( capillary action ) the rise or fall of liquids in narrow tubes as a result of the surface tension of the liquid , which causes the water to adhere to solid surfaces , such as soil particles or the walls of xylem vessels 毛细现象(毛细管作用) :由液体表面张力引起的液体在细管中上升或下降的现象,毛细现象引起水和固体表面的粘合作用,例如土壤颗粒或木质部导管壁。
Soil particle - size distributions fractal dimension is correlative with other texture parameters . the dimension is clear line - relative with clay content and geometric mean diameter , but the line - relationship between the dimension and index of uniformity is low . the dp is sensitive to the variety of soil texture 在理论上也进一步指明了粒径分布维数的物理意义,即:粒径分布分形维数d _ p的范围为0 3 ,其大小反映了不同质地土壤颗粒的填充能力。