planar force-constant model 面间力常数模型
For laves phase Nb-Cr-Ti system, the linear model is the best when the composition of Cr is fixed to 67at%,and if the composition of Cr fluctuates from 67at%,there is the best result when use the force constant model.
对Nb-Cr-Ti,当Cr取值67at%,采用线性模型所得计算结果与实验数据最吻合,当Cr取值在67at%上下波动时,采用忽略结构差异的力常数模型计算结果更接近实验数据。
参考来源 - 金属材料体弹性模量的半经验模型研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Based on the force constant model we calculate the phonon dispersion relations of single wall BC_3 nanotubes with different diameters and chiralities.
引用石墨经验力常数计算碳纳米管声子色散关系时 ，必须处理由二维平面卷曲形成三维实体纳米管所引入的问题 。
When he plugged that wind-force equation into his model and assumed that the probability of a branch breaking due to wind stress is constant, he came up with Leonardo's rule.
他将风力公式应用到他的模型中，并假定树枝受到风力作用而断裂的概率是恒定不变的，据此他推导出了达·芬奇公式。
One of the basic assumption of the simple catalytic model is that during the period of the diseases prevalence, the force of infection is a constant.
简单催化模型的一个基本适应条件是：在疾病流行期间其感染力保持恒定。
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