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a ar中文是什么意思

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用"a ar"造句"a ar"怎么读"a ar" in a sentence

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例句与用法

  • A new purified method for carbon nanotube was put forward . 2 . study of aligned multi - wall carbon nanotube layered multi - wall carbon nanotube arrays were synthesized firstly directly on the surrounding of the reaction quartz tube , in a ar / h2 atmosphere by pyrolysis of ferrocene in xylene into a suitable reaction furnace with cobalt powder in
    与根据碳纳米管的物理、化学性质,提出了一种全新的碳纳米管纯化方法:先对制备的碳纳米管于500在空气中氧化30分钟,然后用18的盐酸煮20分钟,最后将样品稀释,过滤,再用去离子水过滤3次,烘干,便可得到纯的碳纳米管。
用"a ar"造句  
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