周期换向的英文
periodic reversal
例句与用法
- So the cyclic reversed - polarity square voltage could be applied in the wastewater treatment
因此，周期换向方波是一种具有工业实用价值的污水处理波形。 - The cyclic reversed - polarity square voltage not only saves power and electrode consumption but also preventes from electrode passivation and scaling on the surface of electrode resulting in steady quality of purified water
其中周期换向方波不仅能节省电耗和电极消耗，还可以有效地防止电极钝化和电极表面结垢，出水水质稳定。 - For electrodeposition by dc methods , the metals deposite uninterrupted and the particles were also embeded uninterrupted into the coatings ; for electrodeposition by pc method , the particles with biggish volume were desorbed from the coatings and returned to the electrolyte again owing to the presence of pulse interval ; for electrodeposition by prc method , the particles carried positive charges are much more easy to desorb from the coatings owing to the effecf of reverse pulse current combined with pulse interval , in addition , the reverse pulse current also could dissovle the metals , further accelerates the desorption of particles , thus the particles size embeded in the coatings by prc method is the least
直流电沉积时,基质金属的沉积连续进行,粒子在电极表面不间断嵌入镀层;单脉冲电沉积由于脉冲间歇的存在使得具有较大体积的粒子会脱附,重新回到溶液中;采用周期换向脉冲时,反向脉冲电流使表面荷正电的较大的粒子更易从电极表面脱附,同时,反向脉冲电流对基质金属的溶解作用,也会促进粒子的脱附,因此镀层中复合粒子尺寸最小。随着镀层中粒子复合量的增加,三种镀层的晶粒都明显细化,说明al _ 2o _ 3的存在阻止了晶粒的长大,提高了电沉积过程中晶核的形成速率。
