打字机上的一种控制键,当按下此键时便保持此状态,直至释放。 On a typewriter, a control that, when operated, is maintained in its position until released.
一种终端,它的键盘不包括全套的字母数字字符键;例如,只包括十个数字键以及若干控制键。 A terminal containing less than a full alphanumeric keyboard; for example, one containing ten numeric keys plus control keys.
字(词)处理技术中使用的一种控制键,用于释放或移动记录媒体到一个便于从设备上取走的位置。 In word processing, a control that releases or moves the recording medium to a position for easy removal from the equipment.