With increasing of effective pressure, permeability declines gradually and porosity decreases according to the exponentail relations.

随着有效压力的升高, 渗透率是逐渐降低的.

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SmartFire system reduces engine roughness ( reduces fluctuations in cylinder pressure and mean effective pressure ).

smartfire系统减少了发动机的粗糙度 ( 减少波动,在气缸压力和平均有效压力 ).

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The regular permeability is a variable relating to driving pressure difference and effective pressure.

常规“渗透率”是与驱动压差和有效压力相关的变量.

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