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English definition of “ball bearing”

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ball bearing

noun [C] uk   us  
a small metal ball or several of these arranged in a ring to make particular parts of a machine move more easily
Translations of “ball bearing”
in Chinese (Traditional) 滾珠, 滾珠軸承…
in Chinese (Simplified) 滚珠, 滚珠轴承…
(Definition of ball bearing from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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