The study of dynamic behavior of permanent magnetic actuator (PMA) involves solution of an electrically, magnetically and mechanically coupled problem.
永磁操动机构动态特性的研究涉及电、磁、机械耦合场的求解。
But at present, to meet the needs of various tests, the method of memorizing mechanically is still current and the habit of bookish study is still popular in the course of education.
但由于应试的需要，在目前的教育过程中，死记硬背的方法依然盛行，“死读书”、“读死书”的状况依然未变。
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