Introduction was made to the method of sine pulse width modulation (SPWM) wave generated by table searching, which is based on area equivalence principle.
介绍了一种基于面积等效原理，采用查表法产生正弦脉宽调制(SPWM)波的方法。
Based on the equivalence of the true table and Karnaugh map, a novel general method of simplifying logical functions is proposed in this paper.
基于真值表和卡诺图的等价性，本文提出一种基于真值表搜索的逻辑函数自动化简方法。
Considering the effect on permafrost table, there is a kind of dynamic equivalence to some degree among pavement types, external temperature and embankment heights.
从对基底冻土上限影响的角度来看，路面类型、外部气温与路基高度三者间存在一定的动态等效关系。
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