index contour

The novel control circuit is based on the idea determining the sampling instance of current switching cycle by the duration of the voltage pulse at the auxiliary winding during the previous switching cycle.

介绍了利用辅助线圈实现反馈的反激式开关电源的控制原理,以及采样点控制电路在其中的作用,在此基础上提出了一种新颖的单端输入采样点控制电路。

Based on an analysis of the variable methods of drawing auxiliary lines in plane geometry examinations of middle schools, the article analyses the motive, purpose, and method of drawing auxiliary lines, and makes it clear that drawing auxiliary lines is an effective approach to nurturing students creative ability and competence.

本文从中考平面几何题在解题中辅助线的作法变化分析出发 ,探析了在这类问题中作辅助线的动机、目的和方法 ,阐明作辅助线是一种培养学生创造能力、开展素质教育的有效途

In connection with the chapter of triangle in junior middle school mathematics, the article discusses how to draw auxiliary lines of triangle to prove similarity of triangles.

本文从合理地引出辅助线出发,阐述了相似三角形的证明方法。

And it uses secondary thread to deal with data acquiring and input and output of the data.

该软件采用多线程处理问题的思想,主线程响应用户界面,而使用辅助线程来运行数据采集程序和数据的输入输出,这一方法可以提高程序运行速度。

The key of algorithm is assistant segment, this paper listed the terms which a line to be a assistant segment must be agreed to.

该算法的关键在于提取辅助线段,文中给出了辅助线段必须满足的三个条件。