idle wheel

美 　英

• na.【機】惰輪
• 網(wǎng)絡(luò)空轉(zhuǎn)輪；中間齒輪；墮輪

英漢解釋

na.	1. 【機】惰輪,空轉(zhuǎn)輪,調(diào)緊皮帶輪

英英解釋

n.	1. a gear wheel or roller placed between two others to transmit motion between them without changing their speed or direction or to provide support