纳米级的东东不是磨出来的,是要靠化学手段让它们“长”出来的。
纳米级的东东不是磨出来的,是要靠化学手段让它们“长”出来的。
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老π立说,自圆其说?(见链接)
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05/02/2011 postreply
08:42:09
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