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Right now, Hockaday's prototypes put out only a few milli - watts of power.
现在, 霍克蒂的燃料电池原型只能输出几毫瓦的电力.
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In principle, Hockaday's miniature fuel cell is similar to many now being tested.
原则上来说, 霍克蒂的微型燃料电池和许多现在正在实验中的燃料电池很相似.