Have you done your home-work, Gemma?杰玛，你做完家庭作业了吗？Let's take Gemma by there now.我们赶紧把Gemma送去.Good - bye , and thanks for bringing Gemma in.再见, 谢谢你们把Gemma送来.Gemma thought Gadfly was Arthur, but she could not make sure...
自感应电动势等于相反, 力量平衡.Since the induced EMF is equal and opposite, the forces balance out.本文分析了常用的自感应 、 放射性、交流离子等三种静电消除器的性能及其缺陷.In this paper the function and the defect of self - induction eliminator, radioactive static elim...