名词
中文翻译：尺寸不变原理
同义词：
['principle of conservation of mass and energy', 'principle of conservation of momentum', 'principle of conservation of energy']
例句：
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1. The principle of conservation of mass and energy states that the total mass of a system remains constant.
质量守恒原理表明，系统的总质量保持不变。
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2.In the principle of conservation of momentum, it is stated that the total momentum of a system remains constant.
动量守恒原理表明，系统的总动量保持不变。
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3.The principle of conservation of energy states that the total energy of a system remains constant.
能量守恒原理表明，系统的总能量保持不变。