... macro-uniformity 宏观均匀性 macrovoid 大孔隙；大空穴 MAD (main assembly drawing) 主装配图，主要总成图 ...
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There were much more roots in Shrub-bamboo and Fir forests , Therefore vegetation had important effects on the soil macropores.
由此可见，植被根系对土壤大孔隙的产生有明显作用。
参考来源 - 岷江上游亚高山森林土壤大孔隙等物理性状研究·2,447,543篇论文数据，部分数据来源于NoteExpress
介绍了分形几何在确定土壤大孔隙分布中的应用。
The application of fractal geometry to characterize the distribution of soil macropores is introduced.
不同土壤剖面大孔隙的数量和孔隙体积相差很大。
There was much difference in quantity and volume of macropore in the profiles of the three soils.
土壤大孔隙和土壤饱和导水率深度增加呈减小的趋势，并且变异性和复杂性很大。
The macropore and saturated hydraulic conductivity have increase with the increase of altitude and have great variability and complexity.
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