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first law of thermodynamics

[热] 热力学第一定律

1、热力学第一定律

...exothermic reaction 放热反应（体系放热给环境，化学反应的焓变为负值）first law of thermodynamics 热力学第一定律（本质是能量守恒定律）flame calorimeter 火焰量热计 ...

2、[热]热力学第一定律

first t law of thermodynamics热力学第一定律

Chemistry first law of thermodynamics环境化学

the first law of thermodynamics热力学第一定律

物理学

计算机科学技术

能源科学技术

机械工程

化学

n.the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes

同义词：conservation of energylaw of conservation of energy

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