二、土壤孔性与孔度(porosity) 土壤孔性与孔度 (一)土壤总孔度 一 土壤总孔度 土壤总孔度(total porosity)和孔隙比 和孔隙比(void 和孔隙比 ratio) 1、总孔度（total porosit) 、总孔度（ ) 所有孔隙体积(pore volume)的总和占整个 所有...
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压汞孔隙度较大，孔隙结构以吸附孔占绝对优势，约占总孔隙含量的78%；
The pressurized mercury fissures were high. The fissure structure and the adsorption borehole were in overwhelming superiority and were taking 78 % of the total fissure value.
一种具有优化的二级孔结构的Y型沸石及其制备方法，该沸石的XRD相对结晶度在70%以上，二级孔体积占总孔体积的百分数为20 ~ 80%。
The Y-type zeolite with optimized secondary pore structure has an relative XRD crystallinity over 70 % and a secondary pore volume of 20-80 % by total pore volume.
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