Extort
发表于 2025-3-27 00:14:33
Sustainable Development Goals SeriesThe discovery of a new element is not an isolated event. Several small consecutive observations often lead to new presentations of a problem. When the time is ripe and the different observations combine with new knowledge, all the bits and pieces fit together and a beautiful new discovery is made.
并排上下
发表于 2025-3-27 03:38:15
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压迫
发表于 2025-3-27 08:45:24
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增强
发表于 2025-3-27 12:26:23
Carl Auer Von Welsbach: A Pioneer in the Industrial Application of Rare EarthsIn this paper the contributions of Dr. Carl Auer von Welsbach to science and technology will be divided into four sections. The order is not exactly determined by the chronology of his life, since it makes more sense to deal with the different areas that he studied in his scientific and industrial career. The sections are:
adduction
发表于 2025-3-27 15:42:19
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刚开始
发表于 2025-3-27 17:48:32
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懒惰人民
发表于 2025-3-28 01:31:58
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regale
发表于 2025-3-28 03:33:27
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FLING
发表于 2025-3-28 09:20:00
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admission
发表于 2025-3-28 14:14:23
Anaesthesie in der Augenheilkundeof 16 years. The principal concern of the later and more bitter controversy was element 72, which is not a rare earth, but a zirconium homologue. Nonetheless, from a historical point of view the discovery of hafnium is an integral part of the discovery histories of the rare earths, which would be in