例句與造句

1. Stepping drive of synchronous motors , upgrading the design idea of stepping motors from combined electromagnet theory to rotary magnetic field theory , will make the capability and efficiency of the increment control system improved to a new level , which is the research purpose of ac step motion drive this paper begins with the direct torque control method for pmsm to expatiate ac step motion control theory distinctly
   用同步電動機實現(xiàn)步進傳動；將步進電動機的設(shè)計思想從組合電磁鐵理論提高為旋轉(zhuǎn)磁場，使增量運動系統(tǒng)的容量和效率發(fā)展到一個新的水平，這就是交流步進傳動的研究目的。為了比較清楚地闡述交流步進理論，本文首先從永磁同步電動機的直接轉(zhuǎn)矩控制算法入手來分析。
2. It's difficult to find electromagnet theory in a sentence. 用electromagnet theory造句挺難的