[英语原文] Teacher: Here are two birds,one is a swallow,the other is sparrow. Now who can tell us which is which? Student: I can not point out,but I know the answer. Teacher: Please tell us. Student:
This paper introduces a SF vector control system of a slip frequency controlled induction mo-tor with simple structure,fair performance and convenient operation
This paper is devoted to the application of branch mode method in the critical speed ana-lysis of compound rotating systems, in which the distributed inertia in