three-phase squirrel-cage two-pole asynchronous motor 三相二极鼠笼型异步电动机
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Two squirrel monkeys that were colour-blind from birth have had their vision restored after receiving gene therapy.
通过接受基因疗法,两只天生色盲的松鼠猴现在已经能辨别颜色了。
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They found that the best position for gliding had the back two wings in a position similar to that of a flying squirrel.
VOA: special.2010.03.16
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