I'dliketoremindyouthatthereisno_____onthepartofsuspectstoanswerquestions.
他孤注一掷用自己的积蓄开了一家小商店。翻译
两列波的表达式分别为y1=cos2Avtx(/)和y2=cos2Avtx(/),两波叠加后在坐标原点x=0处的振幅为()
产生感生电动势的非静电力是感生电场对电荷的作用力,产生动生电动势的非静电力是__洛伦兹____力.
Weallknowaboutthe_____thatsmokingcandotoourhealth.