In the carburizing process, rare earth elements could promote the decomposition and absorption of medium and the diffusion of carbon atom.
在渗碳过程中，稀土元素对介质的分解，吸收和碳原子的扩散都起到了促进作用。
2
Moisture diffusion coefficients across grain direction increase with medium temperature increasing and humidity decreasing.
随着介质温度的升高，湿度的降低，横向水分扩散系数增大。
3
Computer calculations have been made on the dimensional solution to the anisotropic diffusion convection equation for solar cosmic rays propagating in an uniform and unbounded interplanetary medium.