Jisho

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Noun
1. differential gear
Wikipedia definition
2. Differential (mechanical device)A differential is a device, usually, but not necessarily, employing gears, which is connected to the outside world by three shafts, through which it transmits torque and rotation. The gears or other components make the three shafts rotate in such a way that, where,, and are the angular velocities of the three shafts, and and are constants. Often, but not always, and are equal, so is proportional to the sum (or average) of and .
Read “Differential (mechanical device)” on English Wikipedia
Read “差動装置” on Japanese Wikipedia
Read “Differential (mechanical device)” on DBpedia

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