Hydrogen is used in the chemical industry to synthesize ammonia and in the hydrogenation of vegetable and animal oils and fats.
氢在化学工业中用于合成氨和蔬菜、动物油和脂肪的氢化作用。
Trans fats are liquid oils that are put through a chemical process called hydrogenation to make them more solid and extend shelf life.
反式脂肪是液态油经过所谓氢化的化学处理后变为固态，且保质期延长。
It also produced during the procedure of oils and fats hydrogenation, refining and food processing.
油脂的氢化、精炼和食品加工过程中，也会产生反式脂肪酸异构体。
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