flywheel
n.
also fly-wheel, "heavy-rimmed revolving wheel to regulate motion," 1784, from fly (n.) "speed-regulating device" (1590s, from fly, v.1) + wheel, n..
| 词汇 | flywheel |
| 词根词缀 | Online Etymology Dictionary flywheel n. also fly-wheel, "heavy-rimmed revolving wheel to regulate motion," 1784, from fly (n.) "speed-regulating device" (1590s, from fly, v.1) + wheel, n.. |
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