单词：halogens
音标：['hælədʒənz] ；
卤族
n. any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions
单词：halogens 相关文章
Hard bargainers VS. soft bargainers Dialogue 1 A: We've got a problem...it looks like we'll need more spotlights on the exhibition booth. The client thinks it's too dark,and they want to add halogen lighting. We've already got 3 sets of track lighti
发表于:2018-12-31 / 阅读(138) / 评论(0)
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