思想控制

Motivated by the i dea o f t he v ariable-structure c ontrol, t he c onception o f a pproaching region and leaving region of the switching boundary is developed. The sufficient conditions of whether sliding mode occurs or not on the switching boundary are obtained. Under the assumption of the switching delay time being positive, the sufficient conditions of quasi-sliding-mode occurring on the switching boundary are given.

受变结构控制思想的启发，提出切换线的趋近域和远离域的概念，进而得出系统在切换线上是否会发生滑动模态的充分条件。

The education of the three sons aged 14, 10, and 8 was entirely entrusted to Herbart on condition that he should write a lengthy report by letter to the father every two months.

所以教师不但要引导学生从有关旧观念基础趋向特定新观念的兴趣，而且最好要建立组合已有观念的思想圈，足以控制学生一生中的兴趣。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。