“perpetual motion machine of the first kind”的概念、定义、翻译、参考文献-科学参考

单词	perpetual motion machine of the first kind
释义	perpetual motion machine of the first kind [pǝr`pech·ǝ·wǝl `mō·shǝn mǝ´shēn ǝv thǝ `fǝrst ´kīnd] ^PHYSICS A mechanism which, once set in motion, continues to do useful work without an input of energy, or which produces more energy than is absorbed in its operation; it violates the principle of conservation of energy.
随便看	ground plate ground plot ground point of intercept ground position ground-position indicator ground potential ground pressure ground protection ground proximity warning system ground range ground recharge ground-referenced navigation data ground-reflected wave ground resistance ground return ground-return circuit ground rod groundscatter propagation ground sluice ground speed ground start ground state ground-state maser ground strafing ground streamer

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