| 释义 |
track-ball
基本英英搭配例句
n.跟踪球
名词 trackball:
an electronic device consisting of a rotatable ball in a housing; used to position the cursor and move images on a computer screentrack ball pointer转球式光标指示器…ball track球沟道,轴承滚道…track rod ball plug横联杆球塞track ball跟踪球
用作名词Input devices include keyboards and pointing devices such as mouse,joystick,track ball, or light pen.输入设备包括键盘和点击设备如鼠标，操纵杆，跟踪球或光笔。 |