Answers

2015-08-10T15:38:12+05:30
By using ball/rollers, lubricants (oil, jelly), etc.
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2015-08-10T20:02:17+05:30
Simple measures are to introduce with grease, oil, and various dense liquids whose viscocity is less or that semi liquid material between the parts (electronic or mechanical) of a machines to reduce friction.Other measures are to use different and efficient mechanisms and technologies to prevent energy degradation due to friction by the engineers.
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