step-by-step drive

基本解释

Adopt advanced microcomputer controller and step-by-step motor to drive and control the length of bag with stable performance and accurate testing. Meanwhile, it is easy to operate.
采用先进的微电脑控制器，驱动步进电机控制袋长及商标定位，性能稳定、调整方便、检测准确。
For Circuit design, single chip AT89C2051 was adopted to be the controller for MCU module. Beside this, drive circuit for step-by-step motor and the photoelectric sensor were designed.
电路设计则以AT89C2051控制器为核心构成单片机系统，实现对步进电机的驱动和光电信息的采集。
The quenching machine tool will use frequency conversion speed-regulating motor, step-by-step motor or servo motor, and drive through ball lead screw, with motion speed being even and precise.
淬火机床的发展采用变频调速电机，步进电机或伺服电机，通过滚珠丝杆传动，移动速度均匀、精确。

In the summer of 2010, Starbucks took things a step further by dropping Tall drinks from their drive-through menus, leaving the displayed choices of just Grande (16 oz.) and Venti (20 oz.).
FORBES: The Shortsighted Upsell