查询词典 permeability

The permeability of a soil is important for calculations of underground flow.

土的渗透性对于地下液流的计算很为重要。

In this paper, Guelph permeameter is used for the first time to determine the soil permeability of salt pan.

文章首次将Guelph入渗仪用于盐田土壤渗透量的测定。

And then the drainage performance of porous concrete is studied, porosity and coefficient of penneability are thought to be good targets of its drainage performance, and the dependence relation of coefficient of permeability and porosity is drawn by tests with the permeameter developed by the author.

研究了多孔混凝土的排水性能，提出空隙率和渗透系数是表征其排水性能的指标，利用自行研制的渗透仪，得出渗透系数与空隙率的相关关系。

Based on the lab orthogonal tests,using self-manufactured constant head permeameter,the effect of gravel content,void ratio and particle shape on the coefficient of permeability of soil-rock-mixture was studied.

渗透同强度和变形特性一起，都是土力学中所研究的主要力学性质，在土木工程的各个领域中都有重要的作用[3]。

By means of our own constant head permeameter,we have measured the permeability coefficients of soil-rock-mixture s with different gravel content,and the results show that there exists an index relationship between them.

通过自制的常水头渗透仪，测定了不同含砾量时土石混合体渗透系数值，研究发现含砾量与土石混合体渗透系数之间存在指数关系；基于幂平均法，提出了土石混合体复合渗透系数的计算公式，并通过试验结果验证了该式的正确性，为土石混合体渗透系数的理论计算提供了一个简明有用的计算工具

The elementary relationship between indoor experimental permeability coefficient and the impermeability mark of RCC for Jiangya dam is established according to the results of lots of indoor experiments done by the high pressure multi_function permeameter developed by the university itself.

提出了一种确定室内试验渗透系数与抗渗标号间关系的思路和方法，并根据在自行研制的高压多功能渗透仪上所做的大量芯样室内试验的成果，建立了江垭大坝碾压混凝土室内试验渗透系数与抗渗标号间的初步关系。

Key words : South-to-North Water Transfer; swelling rock; permeability; Guelph Permeameter

对比分析采用 Guelph 渗透仪和双套环对黏土岩和泥灰岩测得渗透系数。

The oil permeability and its influence factors in unsaturated petroleum chalk were studied by carrying out some experiments with a specially improved constant-head permeameter where the matrix suction was controlled with axis-translation technique.

利用改进的常水头压力渗透仪对非饱和油田白垩进行了试验研究，试验中采用轴平移技术来控制基质吸力，据以研究非饱和油田白垩的渗透特性及其影响因素。

Permeability: The product of the permeance and the thickness of a film.

透过系数：透过量与薄膜厚度的乘积。

Oxygen Permeability Coefficient (P'O2): The product of the permeance and the thickness of film.

氧气透过系数（P'O2）：氧气透过量与薄膜厚度的乘积。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。