英语词汇promethium的意思翻译、读音、音标、释义-英汉词典-范文网

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单词	promethium
释义	pro·me·thiumBrE /prəˈmiːθiəm/ NAmE /prəˈmiːθiəm/ noun [U ] (symbol Pm ) a chemical element . Promethium is a radioactive metal that was first produced artificially in a nuclear reactorand is found in small amounts in nature 钷（放射性化学元素）
随便看	when you've read one, you've read them all when you've seen, heard, etc. one, you've seen, heard, etc. them all when you've seen one heard them all when you've seen one seen them all when you've seen one, you've seen them all when you've seen you've heard them all when you've seen you've seen them all where whereabout whereabouts whereaboutses whereas whereases whereby where does go from here where does sb go from here? wherefor wherefore wherefores wherein where is coming from where it's at whereness whereof where on earth 世界读书日倡议书倡导世界读书日世界读书日作文 423世界读书日的由来 423世界读书日活动总结 423世界读书日的句子 423世界读书日活动方案 423世界读书日活动工作计划世界读书日活动方案世界读书日主题活动方案世界读书主题活动方案世界环境日特色主题活动方案世界环境日主题活动方案世界癌症日主题的活动方案世界读书日主题活动总结世界环境日主题活动方案世界环境日主题活动方案世界读书日主题方案世界环境日主题活动方案小学世界读书日主题活动方案大学生世界读书日活动方案世界地球日活动主题方案小学生世界读书日的活动方案世界读书日活动总结开展“世界青年技能日”活动简报世界老年痴呆日活动简报次欢欣欤欧1 欧2 欲欷欹欺款1 款2 款3 歆歇歉歌歙歙止正正此步1 步2

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