Alternating current is different from direct current in that it constantly changes its direct of flow.
交流电与直流电的不同之处在于交流电不断地改变其电流流动方向。
The blinking neon light bulbs shows the direct and the back current spike flow.
闪烁霓虹灯泡显示直接和背部电流流穗。
The direct current method is a simple and convenient method for calculating power system load flow which is applicable for on line control and calculation by computer.
网流直流法是适用于计算机在线控制和计算的一种简便潮流计算法。
S series Linear Shaft Motor is a brushless direct drive tubular linear servomotor consisting of just a magnetic shaft and a moving coil assembly (forcer) which is controlled by the flow of current.
系列的线性轴电机是一款无刷的，直驱动伺服电机，由磁轴和运动线圈组成，运动线圈控制电流量。
Alternating current (AC) : Flow of electric charge that reverses periodically, unlike direct current.
交流电：周期性换向的电流，和直流电不一样。
Alternating current (AC) : Flow of electric charge that reverses periodically, unlike direct current.
交流电：周期性换向的电流，和直流电不一样。
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