重量平均直径的英文

weight mean diameter

• 重量:    weight; scale; hef ...
• 平均:    average; mean
• 直径:    diameter; diam

例句与用法

1. A good forest structure could improve the even degree and range of distribution obviously , and improve the porosity ; the fractal dimension ( fd ) and mean weight diameter ( mwd ) could sign the soil structure feature objectively
   良好的林分结构能明显提高土壤粒径的分布均匀程度与范围，改善土壤孔隙状况；分形维数和重量平均直径能比较客观地表徵土壤结构特徵，是较为理想的土壤结构测定指标。
2. The fractal dimension of the mixed forests were lower than the pure forests and grassland , and the soil weight diameter of the mixed forests were higher than the pure forests and grassland , which indicated that the mixed forest had best soil structure property in stability infiltration and water - holding ; the soil total porosity and the soil noncapillary porosity were different greatly between forest types , but the soil capillary porosity had little differ
   混交林分分形维数均低于单纯林与荒草地，土壤重量平均直径均高于单纯林与荒草坡，说明混交林土壤结构稳定性最好，土壤通透性较好，具有较高的水土保持功能；不同林分类型之间，土壤总孔隙度与非毛管孔隙度差异较大，而毛管孔隙度的差别较小。