diffusion coefficient

• 扩散率

diffusion coefficient的用法和样例：

例句

1. Combining seeral techniques enables researchers to measure the rate of diffusion of these helium gas molecules, which reflect the size of the air sacs in the lung.
   联合其他的仪器研究者能够测量出氦气分子的扩散率，这将反映出肺中肺泡的大小。
2. The application of laser technique in checking nanometer material is introduced,and amethod for checking the thermal diffusion rate of nanometer material is given.
   介绍激光技术在检测纳米材料中的应用，给出了检测纳米材料热扩散率的一种方法。
3. The impurity concentration profile depends on epitaxy growth velocity, growth time and impurity diffusion coefficient.
   如果杂质的扩散系数很小，杂质在外延层中的深度分布是均匀的。
4. The effective diffusion coefficient and rate constant of intraparticle transport were calculated.
   求出了颗粒内有效扩散系数和颗粒内扩散速率常数。