- 推荐网络例句
-
Be so lind as to come early.
务请早来。
-
I touched the tree of heaven by hand and the smell lingered for quite a long time.
用手摸了一下臭大姐,手上的味道存留了好长时间。
-
More than ten years ago,"the negative day" the numerical control line cutting engine bed first applies and the actual production, starts the control bench is uses the transistor separative element assembly to become, after but uses the integrated circuit, now to is using the direction which the microcomputer controls to develop, Therefore this definition design "the electrical fire colored thread cutter automatic control" is by 8031 shrapnel machine took the control core, step-by-steps the electrical machinery achievement to actuate the electrical machinery, the diffraction grating a closed-loop control system which constitutes as the position examination part.
十多年前,&负旦型&数控线切割机床首先应用于实际生产,最早控制台是由晶体管分离元件组装而成,逐渐采用集成电路,现在正向采用微型计算机控制的方向发展,因此本论文设计的&电火花线切割机的电气控制系统&是以89C55单片机作为控制核心,步进电机作为驱动电机,光栅作为位移检测元件而构成的一个闭环控制系统。