“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	contract hire system of agricultural machines contractibility contractible contractible Banach algebra contractible complex contractible graph contractible loop contractible manifold contractibleness contractible on itself contractible parallel pair contractible space contractible surface contractible topological space contractile contractile protein contractile vacuole contractility contracting contracting fault liability contracting function contracting homotopy contracting mapping contracting mapping principle contracting model

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