exocyclic
英
美
adj. 环外的；不在环上的，外向环
双语例句
- The results show that the molecules were adsorbed onto the iron electrode via its exocyclic S atom in a basic solution of pH 13 and its exocyclic S atom or N atom on the thiazole ring in an acidic solution of pH 3.
结果表明2巯基苯并噻唑分子在酸性和中性溶液中通过环外S或环内N原子吸附于铁表面，而在碱性溶液中分子失去氢原子，并通过静电相互作用吸附于铁表面上。 - The empirical predicting rules of A DNA and B DNA local helical twist have been presented. The non neighbor interactions are considered. The results are elucidated based on the steric clashes of large exocyclic groups in the major and minor grooves.
提出了A－DNA和B－DNA局部螺旋扭角的经验预测规则，考虑了非紧邻相互作用.对此结果从大沟和小沟中的大尺度环外基团的空间障碍作了阐述。 - Furthermore, the δ-compression effect of the exocyclic oxygen plays an important role in this respect, as the result of the local van der Waals interactions.
此外，在上述两类化合物中，环外氧原子的δ-压缩效应极为明显，这主要是由于该氧原子局部范德华相互作用能起决定作用的缘故。 - Synthesis of Stereoselective Exocyclic Double Bonds by the Use of Palladium Catalysts
钯催化剂于外向环双键立体选择合成上之应用 - The negative charges on carbonyl oxygen are increased because of the electron-donating effect of the heteroatom in the ring, which is in favor of the stability of the corresponding exocyclic enoltautomer;
环上杂原子的推电子效应提高了邻位羰基氧上的负电荷，从而有利于相应环外烯醇式异构体的稳定；