unknown quantity

1. He is an unknown quantity for his rivals.
   对于对手们而言，他是个未知数。
2. You must eliminate an unknown quantity.
   你必须消去一个未知数。
3. 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。
4. We use x as the symbol for an unknown quantity.
   我们用x表示一个未知数。
5. Phrases like "a number" or "the number" tell us our expression has an unknown quantity, called a variable.
   像一个数或这个数之类的短语，告诉我们表达式中含有一个未知量，称之为变量。
6. 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。
7. To her the outside world was a totally unknown quantity.
   对她来说，外部世界完全是个未知数。
8. An equation in which the highest power of an unknown quantity is a square.
   未知量的最高幂是平方的等式。
9. John is a possibility for the job, but he is still an unknown quantity.
   约翰可能获得这工作但现在还是个未知数。
10. To remove ( an unknown quantity) by combining equations.
    消去通过等式合并消去（一个未知量）
11. 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。
12. As negotiating partners the Taliban are at best an unknown quantity.
    塔利班作为谈判伙伴充其量是一个未知数。
13. 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。
14. What we would find if we could fly to the moon is an unknown quantity.
    如果我们能飞到月球上去，在那里我们将会发现什么，这是很难以预料的。
15. 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。
16. Woman, even more than the working class, is the great unknown quantity of the race.
    妇女比工人阶级蕴藏着更多的未知数。
17. As a teacher, he's still an unknown quantity.
    作为一名老师，人们还不知道他是什么样。
18. The new sale director is still a bit of an unknown quantity.
    新来的销售部主任大家还不大了解。
19. The new teacher is still very much an unknown quantity but we have hopes that he will is a valuable member of our team.
    新教师是谁现在还难以预料，但我们希望他会成为我们队里的重要一员。
20. 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。
21. 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。
22. 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。
23. By the way, the unknown quantity of the integral equations arising in these problems is the equivalent density of current.
    在求解过程中所建立起来的积分方程均以等效电流为未知量。
24. Inquiring Into Determining the Unit Price of Piece Rate Wage by the Regression Linear Equation With One Unknown Quantity
    运用一元线性回归方程制定计件工资单价的探讨
25. 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。
26. 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。
27. The paper mainly expounds the establishment of the linear regression equation with one unknown quantity, and discusses the influence factors for the regression of calibration curve, the ways of analysis interrelated with regression equation.
    文章主要阐述了一元线性回归方程的建立，影响校准曲线回归的因索以及如何应用回归方程进行相关分析。
28. Use 0-1 combined type BEM to establish discrete boundary integral equation with potential function and its normal derivatives as unknown quantity in node;
    利用0-1混合型边界元剖分计算域的所有边界和通过波面高度和势函数的时间过程推算，建立节点上以势函数和波面高度增量为未知数的离散型边界积分方程；
29. Because of the introduction of the unknown quantity of high, many problems generate, such as ranging-error larger, unknown location information increased. The problems result in poor stability of equation-solving, low positioning-accuracy and serious error accumulation.
    由于引入了高度坐标的未知量，产生的测距误差影响变大、未知位置信息增多等问题造成方程求解的稳定性较差、定位精度不高、误差累积严重。
30. This way, the problem in a finite element analysis, the unknown field function or its derivative values in each node becomes a new unknown quantity ( that is, degrees of freedom).
    这样一来，在一个问题的有限元分析中，未知场函数或其导数在各个结点的数值就成为新的未知量（亦即自由度）。

noun

1. a variable whose values are solutions of an equation

   Synonym:    unknown

2. a factor in a given situation whose bearing and importance is not apparent
   1. I don't know what the new man will d