zero n.零；零度；最低点；完全没有；无足轻重的人或物adj.零的；无价值的；零视度的v.把...调零；瞄准；集中注意；迫近
双语例句
This paper introduces the block diagram of NPC three-level inverters and the principle of space voltage vector control. 介绍了二极管中点箝位型三电平逆变器主电路的结构和空间电压矢量控制的原理。
In this paper,we present a frequency conversion electromotor system organized by voltage vector transducer and induction-motor. 本文研究了用电压矢量变频器和感应电动机构成的变频电动机系统。
