free valence
英 [friː ˈvæləns]
美 [friː ˈveɪləns]
自由价
双语例句
- A closely related concept is that of free valence.
一个密切有关的概念是自由价。 - Otherwise inhibition efficiency increase with the increase of summation of free valence in pyridine ring.
而随着吡啶环自由价之和的增加，缓蚀效率提高。 - In this paper, by using the free valence indices and De-war's activity indices as the structure parameters, these parameters for 19 PAH and the second-order rate constants of the Diels-Alder reaction are regressed linearly., The correlations have been satisfactory.
以自由价指数、Dewar活性指数为结构参数，对19个PAH的结构参数与Diels-Alder反应的二级速度常数进行线性回归，得到了良好的相关性。 - By using the computer program of this method, we have calculated the bond order and free valence of some repeated-unit systems with various sizes ( up to 1600 atomic orbitals), and the boundary and size effects are also revealed.
用该法的计算机程序计算了几种由小到大（1600个原子轨道）的重复单胞体系，求得键级、自由价，并通过这些量的变化分析了边界效应及尺度效应。 - The absolute values of the crystal-field splitting energy are minimum at 2 GPa for the free uniaxial stress. The restricted uniaxial stress pricks up the splitting of the valence band, but the direct-band gap does not change.
晶体场劈裂能的绝对值在单轴应力作用下大约2GPa时达到最小值，受限的单轴应力较自由驰豫时使价带顶的分裂加剧，但直接带隙的性质没有变化。 - Analysis results show that the optical properties of these materials in low-energy regions are metallic because of the free electrons intraband-transition, and the transit to semiconducting properties in high-energy area is caused by valence electrons interband-transition.
结合能带结构对光学性质的分析显示，这类材料的光学性质在低能区域由于自由电子的带内跃迁呈现出金属性，高能区域则通过价电子的带间跃迁呈现出半导体特性。