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4 天
50 DIY Projects That Look Like Witchcraft But Are Actually Genius (New Pics)
As kids, we often want to show off the cool things we make, be it a sandcastle, a LEGO house, a drawing, or something else.
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27 天
揭秘呋喃合成反应的奥秘:从基础到应用,科学的魅力无处不在
一、呋喃的基础知识与产业背景 呋喃的名称源于拉丁文单词“furfur”,意为“糠”,象征着其来源于糠醛。工业上,糠醛是通过气相脱羰反应由农副产品(如麦子和玉米)的残渣中大量生产的。因此,呋喃不仅在有机合成中是一种关键的中间体,也是评估可持续 ...
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