_ are used in the machines to protect their surfaces form wer due to friction
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Answer:
lubricants are used in the machines to protect their surfaces form wer due to friction.
Explanation:
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Answered by
1
Answer:
lubricants
Explanation: substances known as lubricants are used in the machine to protect their surfaces from wear due to friction. they fill the irregularities on the surface and make it smooth.
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