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track-ball的英文翻译是什么意思，词典释义与在线翻译：
英英释义
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 screen
track-ball的用法和样例：
例句
用作名词 (n.)
- 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。
词汇搭配
- track 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
