共价键三个参数之一。其余两个分别是：键能，键角。键长是共价键的重要性质，可以由实验测量得到。分析研究键长与其他参数的关系，有利于探索化学物构建的本质。
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bond length - 引用次数：32 参考来源 - 高能体系结构和性能的分子动力学研究bond-length - 引用次数：2
We analyzed the average bond-length, bond-angle and binding energies differences of the single-ring (BN)_n (n=1～20) clusters. When the cluster size increases, the bond-length decreases, the values of angle∠NBN approach to 180°and the∠BNB approach to the internal angles of n-side polygons.
分析了(BN)_n(n＜20)团簇单环结构的平均键长、键角、结合能随n的变化规律，平均键长随n逐渐减小，∠NBN随n的增大逐渐趋近于平角，∠BNB随n的增大逐渐趋近于正n边形内角。
参考来源 - 环状硼氮团簇的理论化学研究bondlength -
bond length - 引用次数：6
From the analysis of geometry, the curvature effect makes the bond length and angle to change.
从几何分析知道,曲率效应使得碳原子间的键长和键角等因素发生变化。
参考来源 - 单壁碳纳米管π电子次级能隙的研究 -
bond length
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bond length
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双语例句原声例句
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所有非氢原子间的键长和键角均在实验误差范围内接近理论值。
All of bond lengths and angles are with in the range of normally accepted values.
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研究人员使用拉曼光谱可以观察到键的震动能量的变化然后计算出键长的变化。
Researchers were able to use Raman spectroscopy to look at the change of the vibrational energy of the bond and then work out the change in bond length.
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另外一点就是键长，我们对键的长度也感兴趣，也就是两个原子核之间的距离。
And we can also talk about the bond length, so we might be interested in what the bond length is, what the distance between these two nuclei are.
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So if we look at its length, it's actually shorter than a single bond, but longer than a double bond.
因此如果我们看它的键长的话，它实际上比单键更短，却比双键更长。
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So, when we think about a bond length, this is going to be the length of our bond here, that makes sense because it's going to want to be at that distance that minimizes the energy.
因此，当我们考虑一个键的长度的时候，这就应该是我们的键长，这是合理的,因为体系会在核间距达到这一距离时,能量到达最小值。
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So we want to have constructive interference to form a bond, where as if we had destructive interference, we would not be forming a bond.
我们需要,相干相长来成键，如果，相干相消了，就不能成键，所以这时候。
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