The existence of the organic matter leads to the soil high plasticity, high contractility, high compressibility, low permeationcoefficient and low strengths.
有机质的存在会引起土的高塑性、高收缩性、高压缩性、低渗透性和低强度。
2
The diffusion coefficient of hydrogen in an iron membrane was measured using slightly improved electrochemical hydrogen permeation technique.
一个略加改进的电化学氢渗透技术被用于测定氢在铁膜中的扩散系数。
3
In addition, both hydrogen permeation time and trapping coefficient of hydrogen increase but the hydrogen diffusivity decreases in the steel with the elevation of annealing temperature.