an unknown quantity

He is an unknown quantity for his rivals.

对于对手们而言，他是个未知数。

I don't know what the new man will do; he's still an unknown quantity.

我不知道那个新来的会怎么做, 他的人怎样仍然是个未知数.

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。

Under the physical coordinate, the horizontal displacement is taken as an unknown quantity, and a nonlinear problem with big displacement of solid mechanics is introduced.

采用物质坐标，用水平位移作为基本未知量，成为固体力学的非线性大位移问题。

The vibration vectors from the capacitance transducers were analyzed, and the moment equation about the centrifuge rotor is created, in which the aerostatic bearing rigidity is an unknown quantity.

分析电容测微仪输出的振动矢量，建立以气体静压轴承刚度为未知量的离心机转子的力矩方程。

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。

To remove ( an unknown quantity) by combining equations.

消去通过等式合并消去（一个未知量）

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.

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.

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。

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.

Our new director is still an unknown quantity.

我们对新来的主管知之甚少.

The new sales director is still a bit of an unknown quantity.

新来的销售部主任大家还不大了解.

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。

Debrecen were an unknown quantity and they played very defensively, which is their right.

赛前谁都不知道德布莱森的实力,他们也踢的很有侵略性, 这是他们正确的选择.

You must eliminate an unknown quantity.

你必须消去一个未知数.

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。

We use x as the symbol for an unknown quantity.

我们用x表示一个未知数。

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。

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。

John is a possibility for the job, but he is still an unknown quantity.

约翰可能获得这工作但(能否获得)现在还是个未知数.

Garlic to me is an unknown quantity.

我从不吃大蒜.

In algebra, the sign X usually denotes an unknown quantity.

在代数里, 符号X常用来表示未知数.

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。