SHEPWM特定谐波消除脉宽调制shepron.她（主格）She is digging at mathematics.她钻研数学。She felt her health improving.她感到自己的健康状况正在好转。She failed in her mathematics.她数学不及格。She'll be coaching all summer.She likes Beethoven very much.她很喜欢贝多芬的作品。She is addicted to television.她对电视入了迷。She treats everyone like dirt.她真是厚脸皮。She laughed herself helpless .她笑得不能停止。She plunged deep into thought.她陷入沉思。She thought along these lines.女仆一直这样想着。