英语词汇perpetual motion怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	perpetual motion
释义	perpetual motion 英/ p??pet?u?l ?m???(?)n / 简明释义永动机：一种理想的机械运动，可以在不依赖外部能源的情况下持续运转。英英释义 n. 1 motion that continues indefinitely without any external source of energy; impossible in practice because of friction 双语例句 1 Because of their perpetual motions, molecules of these mixtures penetrated mud, sand, eventually reached the surface, bringing disaster to vegetation, polluting plants and withering them. 这些混合物的分子长期运动，透过泥层、砂层殃及植被，使植物污染枯萎。
随便看	cross flow type air-screen separator cross flow type cooling tower cross flow valve tray crossflow velocity cross-flow vibration crossflow vortices crossflow zone refiner cross flow zone refiner cross flute cross flux cross flux crossflux cross focus tube cross focus X ray tube cross focus x-ray tube cross focus X ray tube cross fold cross-folding cross fold crossfolding cross folding machine cross foot crossfoot cross foot cross foot

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