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track-ball的英文翻譯是什么意思，詞典釋義與在線(xiàn)翻譯：
英英釋義
名詞 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的用法和樣例：
例句
用作名詞 (n.)
- Input devices include keyboards and pointing devices such as mouse,joystick,track ball, or light pen.
輸入設備包括鍵盤(pán)和點(diǎn)擊設備如鼠標，操縱桿，跟蹤球或光筆。
詞匯搭配
- track ball pointer 轉球式(光標)指示器...
- ball track 球溝道,軸承滾道...
- track rod ball plug 橫聯(lián)桿球塞
- track ball 跟蹤球
