Porosity, surface density, thickness, flow resistance, structure factor and other factors affect the sound absorption coefficient.
孔隙率，面密度，厚度，流阻，结构因数因素综合影响其吸声系数。
The given thickness and evenness of making paper are achiened by controling the flow and density of pulp in the system.
实际应用表明，此控制系统能够满足高质量纸张的生产要求。
With the increase of heat flow density, the influence of coating thickness on the interior temperature of tool is enhanced.
随着热流密度的增加，涂层厚度对刀具内部的温度影响增大。
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