yÞ(ZcÁ7Éûï ÔèDÔ 关键词：树枝状分子 光活性基团 能量梯度 [gap=8663]Keyword: dendritic molecular; optical active group; energy gradient.
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能量梯度两地之间的能量差是事物发生的必备条件。
A gradient, a difference in energy from one place to another is necessary for things to happen.
利用能量梯度法优化构型，对各优化的构型作振动分析，均未出现虚频率。
For all optimized configurations, there is no imaginary frequence in the vibrational analysis.
最近的一些理论和实验研究表明，液滴运动是受基底的表面能量梯度启动和支撑。
A number of recent theoretical and experimental studies have shown that droplet motion can be initiated and self-supported by a surface energy gradient of the substrate.
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