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单词 mechanical equivalent of heat
释义 mechanical equivalent of heat
Symbol J. The ratio of a unit of mechanical energy to the equivalent unit of thermal energy, when a system of units is used in which they differ. J has the value
4.1868 × 107
ergs per calorie. The concept loses its usefulness in SI units in which all forms of energy are expressed in joules and J therefore has a value of 1
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更新时间:2025/6/23 23:21:06