Electronic control unit. Contains a switching transistor controlled by a speed sensor and is used to open and close the primary circuit.

电子控制单元。包括由转速传感器控制的开关晶体管，用来断开或接通初级电路。

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With MCS-51 single-chip microcomputer as control unit and grating scales measuring displacement, a new type of quasi-close loop control system is built on universal lathe.

文章选用MCS -5 1单片机作为控制核心，直线光栅测量位移，在普通车床上建立了一种新型的准闭环控制系统。

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Because the payload is much less massive than the control unit, the centre of rotation is close to the control unit.

ECONOMIST: Spaceflight on a shoestring | The