substituent constant

• 1. 取代常数: substituent constant
• 2. 自旋离域取代基常数: Spin delocalization substituent constant

• 1.讨论了气态摩尔标准生成焓与取代基常数间的线性关系。
  The linear relationship between the gas phase standard enthalpies of formation and the substituent constants is discussed.
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• 2.一些人利用这里的方程，取代平衡常数。
  And some people use that equation here instead of equilibrium constant.
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• 3.您可以自订变数以取代执行期间的字串常数。
  You can customize variables to replace string constants at execution time.
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