however, the steric effects related to the substituents of ps and eva cancels this catalytic behaviour.
然而,有关的ps和eva取代基的空间位阻效应取消此催化行为。
the explanation of these results is based on the assumption that there are reaction mechanisms and steric effects of the zeolite pore.
实验结果可由氢型丝光沸石催化剂的酸强度、酸量、酸中心类型以及沸石晶体孔结构的空间效应与反应机理予以说明。
there are mostly the electron effects and steric effects for the interatomic interactions in organic compounds.
有机物分子中原子之间的相互作用主要有电子效应和空间效应。