办公机器和数据处理设备 meaning in Chinese

office machines and data processing equipment-functionkey symbols on typewriters

Office machines and data processing equipment - function key symbols on typewriters
办公机器和数据处理设备打字机功能键符号
Office machines and data processing equipments - line spacings and character spacings
办公机器和数据处理设备行间距和字符间距
Office machines and data processing equipment - keyboard layouts for numeric applications
办公机器和数据处理设备数字应用的键盘布局
Office machines and data processing equipment - keyboard layouts for numeric applications
办公机器和数据处理设备.数字应用的键盘布局
Office machines and data processing equipment - principles governing the positioning of control keys on key boards
办公机器和数据处理设备键盘上控制键定位的原则