The unit of heat energy commonly used in physics is the calorie.

在物理学中，热能单位一般用卡表示。

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James Joules The physicist James Joules, after we we call after him the unit of work was the first to demonstrate that heat energy and mechanical energy are really equivalent.

物理学家，我们以他命名功的单位,他是第一个演示出,热能和机械能相等的人。

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Other energy-unit acquisitions this year included the waste-heat power generation business of closely held Calnetix Inc. for an undisclosed sum.

本年度的其他能源部门收购还包括掌握余热能源发电业务关键技术的 Calnetix Inc，但具体数额尚未公布。

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They can carry five to 20 times more current in the same unit area while reducing the amount of energy lost as heat by 75-97% (depending on whether the current is alternating or direct), even after accounting for all the nitrogen-cooling paraphernalia.

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For every unit of energy to drive the compressor, the pump yields four units of heat.

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