常見例句雙語例句A model for the unsaturated soil hydraulic conductivity is established based on an assumption that the soil can be represented as a continuum fractal porous medium.土壤的孔隙是具有連續(xù)分形性質(zhì)的物理結(jié)構(gòu)，根據(jù)土壤孔隙分形結(jié)構(gòu)建立了非飽和水力傳導度模型。Soil hydraulic conductivity is closely related to the movement of water and salts in soil profiles and is highly affected by solution salt concentration and its composition.水力傳導度的變化直接影響土壤剖面的水鹽運動，并和土壤溶液的鹽分濃度及其組成有很大關(guān)系。The theories and application about methods of parameter determination on soil hydraulic conductivity in fields are reviewed, and the advantages and disadvantages of those methods are analyzed.綜述田間測定土壤導水參數(shù)的幾種方法的原理及應(yīng)用，并對各種方法的優(yōu)缺點進行對比分析。 返回 soil hydraulic conductivity