1·This is based on the theory that close-range, nonbonded interactions are repulsive, i.e. Steric strain.
这基于这样的理论，即近距离，非键相互作用是排斥的，即立体应变。
2·The results show that herbicidal activity is closely related to the steric and electronic properties of the 5-position of the benzene ring.
结果表明，此类磺酰脲类化合物的除草活性与苯环5位取代基的立体结构和电场性质密切相关。
3·According to the steric field and electrostatic field of the model, some compounds which have high predicted activity were forecast, and they may be employed as reference for further study.
根据模型的立体场和静电场要求设计了一批化合物，其中多数化合物预报的杀菌活性较高，为进一步合成和筛选该类化合物提供了依据。
4·The result indicates that there is a good correlation between the distribution of molecular steric and electrostatic field and bioactivity.
结论说明该系列化合物的分子立体场和静电场的分布与生物活性之间有良好的相关性。
5·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。