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- For intergranular materials, poorly to moderately well cemented, the total porosity is approximately equal to the effective porosity. 对于由晶体构成的物质，其晶粒间含泥浆少或较少，因此总孔隙度与有效孔隙度近似相等。
- For more highly cemented materials and limestones, significant difference in total porosity and effective porosity values may occur. 对于含泥浆较多的物质或石灰岩，其总孔隙度和有效孔隙度会有很大差别。
- AFF( acoustic formation factor) equation is an effective porosity interpretation model using sonic logging data. 声波地层因素)程是利用声波时差资料求取地层孔隙度的一种有效的解释模型。
- Avoidingthe effect of shaly, tuffaceous and oil, this text established the interpretation equation of thetuffaceous sands effective porosity. 考虑泥质、凝灰质和油气的影响,建立凝灰质砂岩有效孔隙度解释方程。
- In dealing with reservoir rocks, it is necessary, because the cementing materials may seal off a part of the pore volume, to define total porosity and effective porosity. 在研究储层岩石时，因为胶结物会堵住一部分孔隙的体积，所以对于油藏流体有必要定义总孔隙度和有效孔隙度。
- From the reservoir-engineering standpoint, effective porosity is the quantitative value desired, as this represents the space that is occupied by mobile fluids. 由于有效孔隙度表示了可流动流体所占有的空间，因此从油藏工程的观点来看，有效孔隙度是所需要的定量值。
- Approximate solutions show that the ground water level rises in proportion with rainfall intensity, time and inverse number of the effective porosity of the soil. 近似解说明了水位的上升与降雨强度和时间成正比，与土壤的有效孔隙率成反比。
- By the relative studies on dcs /dcn and logging interpretation porosity, the author induced the formula for extracting reservoir effective porosity according to dcs /dcn . 通过对dcs/dcn与测井解释孔隙度相关性研究,导出了依据dcs/dcn求取储集层有效孔隙度的公式。
- Log data may be used for calculating shaly capping beds parameters such as thickness, displacement pressure, total porosity, effective porosity, permeability, sand content, etc. 介绍了根据测井资料可综合评价泥质盖层的参数,包括厚度、排替压力、盖层总孔隙度、有效孔隙度、渗透率、含砂量等。
- In dealing with reservoir rocks, it is necessary, because the cementing materials may seal off a part of the pore volume , to define total porosity and effective porosity. 在研究储层岩石时，因为胶结物会堵住一部分孔隙的体积，所以对于油藏流体有必要定义总孔隙度和有效孔隙度。
- Total porosity is the ratio of the total void space in the rock to the bulk volume of the rock; effective porosity is the ratio of the interconnected void space in the rock to the bulk volume of the rock, each expressed in percent. 总孔隙度是岩石中孔隙的总体积与岩石总体积的比值。有效孔隙度是互相连接的孔隙印体积与岩石总体积的比值。两者都以百分率表示。
- Effective porosity influences tremendously on the simulation of MODFLOW+MT3DMS, and both Hydraulic conductivity and longitudinal dispersivity affect more the simulation results of FEMWATER. 有效孔隙率对MODFLOW+MT3DMS的输出结果影响很大；水力传导系数与纵向延散系数对FEMWATER的输出结果影响很大；
- The impacts of the air permeability, the air-filled effective porosity, the depth of the layer, and the amplitude of the barometric fluctuations on the subsoil airflow were analyzed quantitatively. 讨论了土壤孔隙度，土层厚度，空气渗透系数，以及大气压波动的波幅等参数对地表呼吸量的影响。
- The case study shows that the major parameters affecting cancer risk are hydraulic conductivity, bulk density, effective porosity and longitudinal dispersivity, according to priority. 结果显示，在所选用的参数中，对结果不确定性影响最大的参数为水力传导系数，其次为总体密数、有效孔隙率及纵向延散系数。
- That's rather an effective use of color. 这种使用颜色的手法效果相当好。
- EXPERIMENTAL STUDY ON EFFECTIVE POROSITY OF AQUIFER 含水层有效孔隙度的实验研究
- effective porosity of sound absorbing materials 有效空隙率
- In the short term, the medicine may not be very effective. 从眼前来看，这药可能疗效不是很大。
- When does the new system become effective? 新制度何时生效？
- The fear of ridicule is a very effective sanction. 人们不做违法乱纪的事，其中一个重要因素就是怕人耻笑。
