不确定

But the retail enterprise is a hugeness but disperse system in the business field. They compete and change to each other. How to get the competitive predominance is the question to each operator.

客户关系管理在零售企业的应用一直是个难题，因为零售企业面临的是比较分散而不确定的客户，难以采集丰富的客户信息及相关数据，使得客户关系管理的重点体现形式"一对一营销"难以有效开展。

How much growth, if any, there is for Hummer is uncertain.

增长多少，这些对悍马都是不确定的。

We are not sure if the phenomenon of global warming is to blame for current hurricane.

我们不确定全球暖化的现象是否是近来发生飓风的原因。

To establish a method of evaluation uncertainty in detection of hydrochloric acid in air of workplace by ion chromatography.

目的 建立离子色谱法测定工作场所空气中盐酸的不确定度评定方法。

In the second part, we study the problem of output feedback control for a class of discrete-time uncertain systems with Hyperbolic models.

第二部分：研究了一类基于双曲正切模型的不确定参数具有范数有界形式的离散系统的输出反馈的鲁棒镇定问题。

Design of robust sliding hyperplane s for parametric uncertain systems with time-delay.

时滞参数不确定系统的鲁棒滑模设计。

Uncertain singular systems are transformed into the form of restricted equivalence by a nonsingular linear transformation. By the method of Lyapunov function, a new terminal sliding mode control strategy based on the form of restricted equivalence is proposed for the first time, and the hypersurface of a special terminal sliding mode is given. A terminal sliding mode controller is designed correspondingly such that the motion of sliding mode can be guaranteed and the systems state variables can converge to the equilibrium point in a finite time.

通过非奇异线性变换把不确定奇异系统变换成受限等价形式，利用Lyapunov函数方法，首次提出了一种新的Terminal滑模控制策略，给出了特殊的Terminal滑模超曲面，设计了相应的滑模控制器，实现了滑模运动，保证了系统状态变量在有限时间内收敛到平衡点。

It's, it's our hypothesis, so we don't quite know if this is true or not.

对。这是我们的假设，所以我们不确定这是否是真的。

I'm not sure why, but I really identified with him.

我不确定为什么，但我真的很同情他。

That's why we're still iffy about even doing it.

这就是为什么我们仍然不确定即使那么做了。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。