三键，是在化合物分子中两个原子间以三对共用电子构成的重键（共价键），叫做三键（曾用名：叁键）。三键常用三条短线表示。例如：在乙炔HC≡CH分子中，碳原子与碳原子C≡C，氢化氰HC≡N等物质以三键结合。
三键 [sān jiàn]
网络释义专业释义
... aluminium tribromide翻译 【机】 三溴化铝, 溴化铝 acetylenic bond翻译 【化】 炔键; 三键 alpinone翻译 【化】 良姜酮; 7-甲氧基-3,5-二羟基黄酮 ...
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双语例句原声例句
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我们来考虑一下如何划分单键、双键和三键。
Let's think about how we can classify single and double and triple bonds,.
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是氢的键更短，还是氮与氮的三键更短？
Is a hydrogen bond shorter, or is a nitrogen-nitrogen triple bond going to be shorter?
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一个三键，同样的也有沿着核间轴sigma键。
A triple bond, again is going to have one sigma bond on the internuclear axis.
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And something that we'll see later on is that triple bonds, for example, are going to be stronger than a corresponding double bond or a corresponding single bond.
而我们以后还会看到三键，举例来说，应该更强，相较于相应的双键,或者相应的单键来说。
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so you can see that there is going to be two sets in antibonding, three sets in bonding for a net of one, giving us the single bond.
因此你能看到,反键轨道上有两组，三组成键，得到一组净成键，所以成的是单键。
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Let's re-draw this, so it looks a little bit neater, where we have a triple bond in the middle instead, and again, we need our negative 1 charge there.
让我们重写这个，这样看起来更整洁一点，我们有一个三键在中间，同样地，我们这里需要一个负电荷。
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