The low sulfur tolerance of the catalyst with a low acid amount was attributed to the insignificance of the electrondeficiency of the metal particles.
酸量过小的催化剂抗硫性差则与金属中心缺电子效应较小有关。
2
The fundamental, method and deficiency of quantitative electron crystallography have been described, further improvement for it was discussed.
阐述了定量电子晶体学测定晶体电荷密度分布的基本原理和方法、不足之处和改善途径。
3
But the fact that the excess bariums are responsible for electron emission may be reconciled with the deficiency of alkaline earth metals during life by the dynamical surface emission center model.