system unit
noun /ˈsɪstəm juːnɪt/
/ˈsɪstəm juːnɪt/
(computing- the main part of a computer, separate from the keyboard, mouse and monitor, that contains the unit that controls all the other parts of the system
系统单元,系统部件(包含中央处理器,不含键盘、鼠标和显示器的电脑主体部分) Topics Computersc2