unknown quantity
英 [ˌʌnˈnəʊn ˈkwɒntəti]
美 [ˌʌnˈnoʊn ˈkwɑːntəti]
未知量;未知数
英英释义
noun
- a variable whose values are solutions of an equation
- a factor in a given situation whose bearing and importance is not apparent
- I don't know what the new man will d
双语例句
- The computing efficiency is excellent with BEM since the elements are divided only on the boundaries and the number of freedom is reduced greatly through translating the inner unknown quantity to the boundary with basic solution.
由于边界单元法只在边界上剖分单元，通过基本解把域内未知量化为边界未知量求解，自由度数目大大减少，计算效率较高。 - With the impact of large deformation consolidation, the fluctuate part of rigidity matrix was contained fundamental unknown quantity.
受大变形的影响，在纽曼随机有限元求解过程中，刚度矩阵波动值也含有未知量增量的相关项。 - The problem is that in both opposing Mr Obama and putting distance between himself and President Bush, Mr McCain became an unknown quantity and hence a risk.
问题在于麦凯恩既要对抗奥巴马，又要与布什拉开距离，他因此成为了一个未知数，因而也是一个风险。 - His ability to make decisions in a crisis is an unknown quantity.
他在危机中作决定的能力还是个未知数。 - Equations for the projections of various vectors onto the moving nxes and the unknown quantity and its projection in the moving coordinate system is found thereby.
在此基础上，列出各矢量在动坐标轴上的投影方程，并求出未知量及未知量在动坐标系中的投影。 - If he was to quench his thirst for knowledge, he could do nothing other than explore the unknown quantity.
他要满足求知欲没有别的办法，只能到自己陌生的领域中去探索。 - Based on the ideal forming theory, the triangle membrane cell is adopted and the deforming relations are analyzed. Equations are established with the nodal co-ordination in initial configuration as fundamental unknown quantity.
基于理想形变理论，采用三角形膜单元，分析了单元变形关系，建立了以初始构形上的节点坐标为基本未知量的反向有限元模型。 - Youth is the smile of the future in the presence of an unknown quantity, which is itself.
青春就是未来在向一个陌生人微笑，而这陌生人就是自己。 - By means of regression equation with one unknown quantity for leaf area of Biota orientalis, ecological and economical benefits of this tree species were quantitatively obtained.
通过求出侧柏叶面积的一元回归模型，定量说明济南近郊山体侧柏树的生态效益、经济效益。 - In algebra, the sign x usually denote an unknown quantity.
在代数中，x符号通常代表一未知的量。