ball bearing
Two or more cutters, rotating freely on ball - bearings, are set in the head of the bit.
可在钻头上安装两个或更多的支在滚珠轴承上自由旋转的切削刀具。
—— 辞典例句SRT - 03 rotary tables fitted with precision four point contact preloaded ball bearings.
SRT-03旋转平台配备有精确的四点接触预装滚珠轴承。
—— 给力词典精选Spindle support on ceramic balls bearings at oblique contact for high speed.
为确保高速,采用陶瓷滚珠轴承与主轴斜向接触。
—— 给力词典精选Permanently sealed and lubricated ball bearings front and rear.
前后端盖装有永久密封和自润滑的滚珠轴承。
—— 给力词典精选Large sheave mounted on sealed ball bearings for high efficiency.
安装在密封滚珠轴承上的大型滑轮,有相当出色的效率。
—— 给力词典精选