例句 /

According to the soil particle distribution theory and the fractal theory, this paper studied soil structural property of seven different forest types and grassland.

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。