通过处理前后的紫外可见光谱图可见，甲基橙具有的苯环结构和萘环结构被破坏，从而表明甲基橙已经被降解。

UV-Vis spectrum indicated that the phenyl structure and naphthyl structure of methyl orange were destroyed, methyl orange solution was degraded.

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当然，这是共振的，所以我们可以在这里标上共振记号，表明苯环是一个共振结构。

So, of course, this is resonance so we can go ahead and put our resonance notation in there to indicate that benzene is a resonance structure.

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在分子结构上引入憎水基-苯环后，显著提高了脲醛树脂的耐水性。

The hydrophobic property of the resin has remarkably improved by adding the hydrophobic group of benzene ring to the molecular structure of the resin.

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So, let's look at this in a more simple structure here where we have the two possible forms of benzene, and the reality is is that it's going to be some combination of the two.

让我们从一个更简单的结构,来看看这两种可能的苯环构型，实际情况,是这两个的组合。

麻省理工公开课 - 化学原理课程节选

So, of course, this is resonance so we can go ahead and put our resonance notation in there to indicate that benzene is a resonance structure.

当然，这是共振的,所以我们可以在这里标上共振记号,表明苯环是一个共振结构。

麻省理工公开课 - 化学原理课程节选