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天然的水晶一般都会有絮状（绵绺），也就是大家俗称的瑕疵，这是液体水落石出和二氧化碳的小孔穴，而人工合成的水晶就不会有这样的特征。Bismuth (Bi) appears to generally be a steel, but the number of electrons accessible for electrical conduction is similar to that of semiconductors. The truth