steric hindrance effect

HTMA cured with epoxy resin gently and slowly, owing to the synergistic effect of steric hindrance effect and stereo-electronic effect.

空间位阻效应及电子效应的协同作用使HTMA与环氧树脂的固化反应速度降低，固化过程中放热量小，放热平缓。

Results the particles may have higher electrostatic effect by adjusting the pH value of the medium and have steric hindrance effect by adding the surfactants on the previous condition, which prevent the particles from agglomeration.

结果：调节介质的pH值，使颗粒间处于较高的静电效应，在此条件下加入表面活性剂，使颗粒间又具有空间位阻稳定效应，空间位阻稳定效应可阻止颗粒间的团聚。

The effect of solvents and steric hindrance on the stereochemistry of cyclization is investigated in details.

并且考察了在环合反应中溶剂和空间位阻对立体选择性的影响.

The results indicated that, by using mixed surfactant, the absolute value of ζ potential was enhanced and the static effect and steric hindrance effect of colloidal solution were strengthened as well.

结果表明，在胶体溶液中加入混合表面活性剂后可以提高胶体的ζ电位绝对值，使静电效应和空间位阻效应同时增强。