不确定性

But the third and perhaps more subtle issue is the uncertainty about how to assess the riskiness of individual eurozone bonds.

但第三--或许也更微妙的--问题是，如何评估个别欧元区债券风险所面临的不确定性。

The problem of observer-based robustly stable controller is studied for time-delay systems with a class of nonlinear uncertainty.

研究了一类具有非线性不确定性时滞系统基于状态观测器的鲁棒稳定控制器的设计问题。

"We believe that longer term you do want to gradually increase the weighting to about 40% or more , but there isn't any rush to buy into these markets, because you still have some rockiness and uncertainty ahead," he says.

他说，我们相信，中长期而言，你会希望将外国股票的投资比重逐渐增加到40%左右或更高的水平。但不必匆忙进入这些市场，因为前面还将有动荡和不确定性。

A plastic model was proposed which develops from the combination of boundary surface theory and multi-shear mechanism plastic theory. This model avoids the uncertainty and complication associated with the revision of Mansing's rule when a multi-shear mechanism plastic model is used, and is able to simulate the rotation of principle stress axes during seismic activities and the large shear deformation during liquefaction.

将边界面理论和多重剪切机构塑性理论结合起来并加以改进建立了多重剪切机构边界面塑性模型，避免了多重剪切机构塑性模型通过修正系统修正曼辛准则时的不确定性、复杂性；且能模拟地震时主应力轴的偏转和液化时剪切大变形。

Huang, Jikun, Ruifa Hu, Carl Pray, Scott Rozelle and Fangbin Qiao.2002,"Small Holders, Transgenic Varieties, and Production Efficiency: The Case of Cotton Farmers in China", Austrialian Journal of Agriculturla and Resource Economics.

虽然害虫对于转基因作物能够产生抗性是已经得到公认的，但是其已有的程度和发展阶段都有很高的不确定性(Hermann Waibel etc。， 2001)。

Always keep in mind that practice rudiment is a literally infinite task because of higher level you achieve, the more difficult and uncertain it will be.

始终记得rudiment的练习可以说是无止境的，因为它的变化极多，并且越到高的等级，不确定性就会越强。

This improved that the distribution of macropores was ruleless , complex degree was high.

2信息熵的大小既反映不确定性程度的大小，又是无序度的量度。

Uncertainty is one of the difficulties in the assessment of voltage sag.

不确定性问题是电压暂降评估工作的难点之一。

Foreign capital facilitate the saltant development of regional economy,however,the low efficiency and instability of foreign enterprises lead to the limitation and instability of independent innovation and upgrade of industrial structure in regions where foreign capital is principal part,and the potential of sustainable development in these regions is uncertain.

但由于外资企业投资上的低效率性和游移性，致使以外资为主体经济成分的地区自主创新和产业结构升级具有局限性、不稳定性，其可持续发展潜力与能力也具有不确定性。

If the training samples fail to represent the sample space, sometimes the predictions of new samples can be degraded.

由于多元校正的样品光谱空间的多维性和复杂性以及样品选取过程中的不确定性，准确估计训练集样品在整个样品空间的代表性尚存在一定困难。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐