“the group ⅦA elements”的概念、定义、翻译、参考文献-科学参考

单词	the group ⅦA elements
释义	the group ⅦA elements Encyclopedia 理学第Ⅶ主族元素释 the group ⅦA elements第Ⅶ主族元素包括氟（F）、氯（Cl）、溴（Br）、碘（I）、砹（At）五种化学元素。简称卤素。
随便看	ten silk patterns tensimeter tensioactive tensiometer tensiometer-type soil moisture gauge tensiometry tension tension and compression tension and compression component tension control systems tensioned impressed current cathodic protection tension/extensional/elongational rheology tension/extensional/elongational thinning tension field tension field beam tension gauge tension leg platform tensionless limit tension meter tension of reeling thread tension pneumothorax tension receptor tension, tensile force tension type electronic fence tension type headache

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