roller bearing
短语[医]滚动轴承
词形变化
roller bearings
复数
roller bearings
释义与例句
n.
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1.
A bearing in which the load is carried by round (e.g. cylindrical or spherical) elements (rollers).
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2.
A bearing in which the load is carried by round (e.g. cylindrical or spherical) elements (rollers).
Such a bearing with cylindrical rollers rather than spherical ones (balls).