Yang designed a dashboard mount filled with steel ball bearings and lined with silicon.

杨全国设计了一种以钢珠轴承填充并以硅衬底的仪表盘座架。

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One day, physicist Ho-Kei Chan of Trinity College Dublin was playing with steel ball bearings, trying to pack them into a little cylindrical tube in the most efficient way possible.

一天，都柏林大学圣三一学院的物理学家陈和奎正拿着一些铁珠玩耍，试图将他们以最有效的方法装进一个小的圆柱型管子里。

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If your company makes steel ball bearings or sells groceries, I wouldn't even consider him.

如果你的公司是制造钢珠轴承或卖食品杂货的，那对于你说的这个人，我连考虑都不会考虑。

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Inside there are just three stainless-steel ball bearings, housed in anodized aluminum bar stock.

FORBES

Cycling's innovations, including spokes, pneumatic tyres, ball bearings, steel tubing and differential gears, were soon borrowed by the motor industry.

ECONOMIST: How Robert Penn found himself the perfect two-wheeler