steric effect 立体效应 ; 位阻效应 ; 空间效应 ; 形位效应
space-steric effect 空间效应
spacial steric effect 空间位阻效应
topological steric effect index 拓扑立体效应指数
the mechanism of steric effect 立体作用机理
effective topological steric effect index 有效拓扑立体效应指数
Steric hindrance effect [化学] 位阻效应
steric hindered effect 空间位阻效应
steric blocking effect 空间堆积效应
From structure of organic compounds, this paper analyses and discusses impact of acids basing activity of organic molecules about electronic effect, hybrid method and steric effect.
主要从有机化合物的结构出发，分析和判断了电子效应、杂化方式及空间效应等因素对有机分子酸碱性的影响。
The steric structure is the main effect on the herbicidal activity as results.
研究结果表明，影响其药效的主要因素是空间结构。
Some influences of steric effect, reaction temperature and solvent effects were discussed.
并简单讨论了立体效应，反应温度和溶剂效应对此还原反应的影响。
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