Measuring method for particle - size distribution of dusts in flue gas 廢氣中灰塵粒度分布的測量方法
Standard test methods for particle - size distribution gradation of soils using sieve analysis 使用篩分法測定粒度分布
The relationship of soil particle - size distributions and soil water retention characteristics , saturated and unsaturated hydraulic conductivity were studied in the lab 本研究對陜西四種不同質(zhì)地土壤的粒徑分布與水分特征曲線及飽和、非飽和導水率的關系進行了研究。
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模型得出的四種土壤的水分特征曲線,在低吸力范圍段可以較好反映土壤實際的土水勢與含水量之間的關系。
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 在理論上也進一步指明了粒徑分布維數(shù)的物理意義,即:粒徑分布分形維數(shù)d _ p的范圍為0 3 ,其大小反映了不同質(zhì)地土壤顆粒的填充能力。
Fractal scaling of soil cumulative mass particle - size distribution is more easy to be use to get particle - size distributions fractal dimension ( dp ) , this model give the dimension a strictly range : 0 < 3 . it response to filled - ability of soil particles . the texture is heavier , the dp is too high . 2 以土壤累計質(zhì)量分布的粒徑分形特征為基礎,將顆粒數(shù)量表示的粒徑分布分形維數(shù)化解為以顆粒質(zhì)量確定的粒徑分布分形維數(shù),可以更為方便地確定出粒徑分布分形維數(shù)。
百科解釋
The particle-size distribution (PSD) of a powder, or granular material, or particles dispersed in fluid, is a list of values or a mathematical function that defines the relative amount, typically by mass, of particles present according to size.Jillavenkatesa A, Dapkunas S J, Lin-Sien Lum, Particle Size Characterization, NIST Special Publication 960-1, 2001 PSD is also known as grain size distribution.