These radioactive elements are by-products of the fission reaction that generates power in the nuclear plants.

这些放射性元素为核电站裂变发电时的副产品。

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Unreacted calcium oxide or calcium carbonate generates sufficient heat to the endothermic reaction between calcium fluoride and sulfuric acid so that no external heat is needed.

未反应的氧化钙或碳酸钙为氟化钙与硫酸之间的吸热反应产生足够的热量，从而不需要外部的热量。

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Its chemical reaction, which occurring in all living organisms generates energy and maintains life.

他是发生在生物有机体产生能量并且维持生命的一种化学反应。

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Every fuel cell, which generates electricity by a chemical reaction (as opposed to combustion), has an electrolyte.

FORBES: Salt Water Fuel Cells - Coming Soon?