结果表明，杨木hyp和桦木hyp可显著提高纸张松厚度、挺度及不透明度。
Results show that paper bulk, bending stiffness, and opacity can be improved significantly by both aspen and birch HYPs.
文章论述了特种邮票纸的平整性，松厚度，涂层表面粗糙度，油墨吸收性与印刷适性的关系。
It was discussed that the effect of size-stability, thickness, roughness of coating layer, and ink absorption and printability of special paper for stamp in this paper.
这些特性包括较低的平均微粒长度，相对挺硬不易聚集，因此可以使纸页有较高的松厚度和不透明度。
These properties are a small average particle length, a relatively stiff fiber which prevents packing, and therefore tends to give a sheet of paper with high bulk and good opacity.
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