ZK3-6/250 single stage drive electrical locomotive adopts step speed adjustment with the characteristics of easy operation, simple structure, reliable running and easy maintenance etc.
ZK3-6/250单级传动电机车采用有级调速，其特点为操作简单方便、结构简单、运行可靠、维护方便等。
The reasons and characteristics of the movement of oscillation center and the behavior of varying electrical quantities during this kind of asynchronous operation are also discussed.
针对复杂电力系统发生多频率异步运行的情况，振荡中心飘浮移动的原因、规律以及电气量变化的特征进行了初步分析与探讨，并通过数字仿真进行了必要的验证。
Upon completing this course, the student will understand their principles of operation, and how their electrical characteristics depend on their physical parameters and operating conditions.
通过本课程的学习，学生应当掌握半导体器件的工作的基本原理，并能正确分析不同的物理条件与工作条件与器件电学特性的影响。
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