gear case
短语齿轮箱 [化] 齿轮箱; 变速箱
词形变化
gear cases
复数
gear cases
别名
gearcase
释义与例句
n.
-
1.
An enclosure for the bicycle chain and sprocket assemblages commonly employed by utility bicycles. It protects the chain from mud and dirt and may also contain an oil bath to keep the chain lubricated.