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electron donating
释义
- 供电子
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The energy gaps of the complexes were lessened in the presence electron - donating groups.
供电基存在时复合物的能隙变小.
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Electron - withdrawing 2 - substituents electron - donating 3 - substituents of the phenyl ring are favorable for increased herbicidal activity.
苯环2位是拉 电子基,3位是给电子基有利于提高除草活性.
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