trackwheel
美
英 
- 網(wǎng)絡(luò)滾輪;轉(zhuǎn)動(dòng)撥輪;撥弄黑莓手機(jī)的滑輪
例句
They tried to use the trackwheel as a way for a user to scroll through phone options and, without a keyboard, try to enter numbers.
他們嘗試通過滾輪實(shí)現(xiàn)手機(jī)選項(xiàng)切換和數(shù)字輸入,沒有鍵盤。