网络释义专业释义英英释义
永动机 （ perpetual motion machine ）是否可能？并期望得到合理的答案．实际上我们更感兴趣的是某些一般规律，诸如能量守恒、不可逆过程、相变等等．在基本的层次上...
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[ act upon the opportunity ] 谓抓住时机立即作出决断 [ perpetual motion machine ] 按照能量守恒定律，根本不可能有的机器，这种机器可以连续无限期地作功而不从外部能源吸取能量 [ organic ] 含碳的，尤指其中氢原子连接到碳原子上的...
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perpetual motion machine
- n. a machine that can continue to do work indefinitely without drawing energy from some external source; impossible under the law of conservation of energy
以上来源于: WordNet
双语例句原声例句权威例句
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It's a $500 billion perpetual motion machine.
这一台永动机花费五千亿美元。
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A perpetual motion machine would have to be frictionless.
永动机只能是一种无摩擦力的机器。
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Making energy like the sun does might too cheap to meter or as uneconomical as a perpetual motion machine.
像太阳一样产生能量可能会太便宜以至于无法计费，或是像永动机一样太不合算。
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That would that would give rise to a perpetual motion machine, breaking of the second law. It can't happen.
否则就会使,得永动机出现，打破第二定律那是不可能的。
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