不可预测性

In order to avoid introducing errors existing in full state observer, for flexible structure with immeasurable states a equivalent system is constructed which only takes the past inputs and outputs of the original system as the states. Multi-step predictive optimal method is required to solve the convergence law of sliding surface.

针对模态不可测的挠性结构，为了避免设计状态观测器以及引入观测器误差，从原系统构造了仅利用过去的输入和输出信息作为状态的等价系统，用多步预测滚动最优的方法求解滑动平面的趋近律。

And, although modern people have a hard time accepting it, the relationship between sex and odourless cleanliness is neither constant nor predictable.

而且，——这会让现代的人很难接受，性与干净无味之间的关联既不固定也不可预测。

Agility is the ability of enterprises to survive in a competitive environment of continuous and unanticipated market change.

敏捷性是企业在不断变化、不可预测的竞争环境中生存的能力。

We will see more and more activist government policies that distinguish economic activities according to the nationality of the actors.

我们将看到越来越多激进的政府政策，这些政策根据企业的国籍来区分经济活动。

If we can prove the independence of an axiomatic system, then we can guarantee the conciseness of this system, ie.

如果能够证明某个一阶谓词系统的独立性，那么就能够保证该系统的建立是精炼的，即没有任何一条公理或推理规则是多余的。