...质（如土壤）中的颗粒尺寸大小的分布（Particle size distribution，PSD）决定了其孔隙尺寸大小的分布（Void size distribution，VSD） [5] ，而正是孔隙尺寸大小的分 布决定了该孔隙介质的含水特性以及土水特征曲线。
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void-size distribution 空隙大小分布
The effects of gas flow rate and rotating speed on the fluid field, local void fraction distribution and bubble size distribution were investigated.
考察了不同通气量和操作转速下气液搅拌槽内流体流动，局部气含率和气泡尺寸的分布规律。
D623 improves water retention of fresh mortar and entrains a large amount of micro air void which causes bulk density to reduce, pore size distribution to change.
D623提高保水新鲜砂浆和夹带了大量的微空隙，这会导致堆积密度降低，孔径分布改变。
The void formation and its micrograph of distribution, density as well as void size in sapphire single crystal grown by EFG were investigated.
在此基础上实验观察了白宝石单晶中的位错、亚晶界和小品面等缺陷的形态、数量及分布，讨论了生长条件对它们的影响。
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