WebMar 16, 2024 · bromine (Br), chemical element, a deep red noxious liquid, and a member of the halogen elements, or Group 17 (Group VIIa) of the periodic table. atomic number35 atomic weight[79.901, 79.907] melting …
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BR是什么意思及音标_翻译BR的意思_用法_例句_英语短语
Webbr. n. a nonmetallic largely pentavalent heavy volatile corrosive dark brown liquid element belonging to the halogens; found in sea water. 同义词:bromineatomic number 35 WebBR、Br、br 可以指: 在以下標準中指巴西: ISO 3166-1 alpha-2; ISO 3166-2:BR; FIPS 10-4(美國政府內使用).br,巴西的國家網際網路頂級域名; 布列塔尼語,br是其ISO 639 …WebOrganobromides are used in halon fire extinguishers that are used to fight fires in places like museums, aeroplanes and tanks. Silver bromide is a chemical used in film photography. Before leaded fuels were phased out, bromine was used to prepare 1,2-di-bromoethane, which was an anti-knock agent.aro ken i barbi