what is ball bearings
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one of a number of metal balls put between parts of a machine to make them move smoothly
धातु-निर्मित गोली जो मशीन के पुरज़ों के बीच पड़ती है ताकि मशीन बराबर चलती रहे; बॉल बियरिंग
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Answer:
ball bearings help thing to work it's use in all vehicle and in all types of automobile work ✌
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