无模式标本
There are many differences between A & D's Sine wave Vibro Viscometer and the common rotational type viscometer.
正弦波振动式粘度计与旋转式粘度计有许多不同的方面.
on the solution of the linear sine-type difference equation
一阶线性正弦型差分方程的解的讨论
Three-phase voltage type PWM rectifier compared to the conventional diode-controlled rectifier or thyristor phase-controlled rectifier has the advantages of the sine of the net measured current, unity power factor, energy flow in both directions, the system can run in four quadrant.
三相电压型PWM整流器相对于传统的二极管不控整流或者晶闸管相控整流具有网测电流正弦化、单位功率因素、能量双向流动、系统可四象限运行等优点。
英语网 · 双语娱乐资讯
英语网 · 少儿英语故事