The brushed are so placed that when the sides of an armature turn ( or coil ) pass through the middle of the region between field poles , the current though it changes direction 电刷是这样安排:当电枢绕组(或者线圈)的边通过励磁磁极区域中部时,流经其的电流就会改变方向。
The brushes are so placed that when the sides of an armature turn ( or coil ) pass through the middle of the region between field poles , the current though it changes direction 电刷是这样安排:当电枢绕组(或者线圈)的边通过励磁磁极区域中部时,流经其的电流就会改变方向。
Introducing several osl fabrication methods , mainly electric field poling method is investigated , and discussing the limit relation among poling electric field e , poling current i and natural poling intensity ps , and analyze the various factor affecting the osls quality . 4 . the experiment of aperiodical litaos multi - wavelength shg is demonstrated 3 、介绍了几种介质制备的方法,着重对高压电场极化法进行了理论研究,讨论了脉冲电压,电流及自然极化强度p _ s之间的制约关系,分析了影响成畴质量的几个物理因素。