| 单词 | friction |
| 释义 | friction n. 1. the action of one object rubbing against another. 2. the resistance an object encounters in moving over another. 3. a clash of wills, temperaments, or opinions; mutual animosity arising from disagreement. 4. (in comb.) of devices that transmit motion by frictional contact (friction-clutch; friction-disc). Phrases and idioms friction-ball a ball used in bearings to lessen friction. Derivatives frictional adj. frictionless adj. Etymology: F f. L frictio -onis f. fricare frict- rub |
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