The laser flatting signal combined with a closed-loop control system can be used in automatic level flatting of the ground.
激光扫平信号与闭环控制系统结合，可实现地面的水平平整。
The NC remaking scheme of tool grinder is a closed-loop control system, which USES single-chip microcomputer as a control system and step motor as the executive equipment.
以工具磨床刃磨铣刀螺旋刃的数控改造为例，阐述了基于单片机控制的数控改造方法。
The control scheme and operating principle of a double closed-loop AC/DC power converter system are discussed by using physics.
从物理角度讨论了双闭环交/直流功率变换器系统的控制方案和工作原理。
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