“thorium”的概念、定义、翻译、参考文献-科学参考

　

单词	thorium
释义	thorium Encyclopedia 工学核燃料释 thorium钍天然放射性元素。元素符号Th，原子序数90，原子量232.0381，锕系放射性元素。理学放射性元素释 thorium钍天然放射性元素，元素符号Th，原子序数90，原子量232.0377。属周期系ⅢB族，锕系元素。以北欧神话中的雷神托尔（Thor）命名。 Physics thorium钍₉₀Th｛化｝ Astronomy thorium缩写：Th。钍 Chemistry ＞放射化学与辐射化学＞放射性元素化学＞释义 thorium钍
随便看	covering homotopy theorem covering isotopy covering lemma covering Lie group covering linkage invariant covering manifold covering map covering number covering of a group covering of a manifold covering of a plane covering of a set covering of a space covering of a surface covering of a topological space covering of finite order covering of finite type covering of Vitali covering path covering point covering polyhedron covering problem covering projection covering property covering radius

　

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