提出了密度计法颗粒分析试验的一种曲线拟合及修正方法，经验证效果较好。
A curve fitting and revising methods to solve hydrometer grain analysis is presented, and proved good satisfactory.
采用回归分析方法建立了参数与土壤物理特性间的函数关系，为采用土壤颗粒组成等土壤物理特性确定土壤水分特征曲线提供了指导。
A fitted relationship between the parameters and the soil texture was established, with which the model parameters of soil water retention curves can be predicted by the soil physical characteristic.
对试验所得的固体颗粒停留时间分布曲线的分析明显表明床内存在着由于流体动力特性和几何结构引起的颗粒返混。
The experiments show that the solid reflux due to hydrodynamic and geometrical reasons are clearly observed in the analysis of the RTD (residence time distribution) curves.
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