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A novel carbonaceous adsorbent for heavy metal removal was prepared from raw coal by one-step simple sulfur impregnation......
本文利用日本岛津UV-240型紫外可见分光光度计和GEB-H6高压汞灯研究了K2SiO3在玻璃上涂膜的紫外和可见光谱特性.从而为室外色彩提供了一种优良的抗紫外......