dispersion coefficient的用法和樣例：
例句
- The impurity concentration profile depends on epitaxy growth velocity, growth time and impurity diffusion coefficient.
如果雜質的擴散係數很小，雜質在外延層中的深度分佈是均勻的。 - The results showed that diffusion coefficient and diffusive distance increased w ith raising of negative substrate bias.
結果表明擴散係數和擴散距離都隨著負襯底偏壓的增大而增大。
