“natural radioelement”的概念、定义、翻译、参考文献-科学参考

单词	natural radioelement
释义	natural radioelement Encyclopedia 理学放射性元素释 natural radioelement天然放射性元素最初是从自然界中发现而不是用人工方法合成的放射性元素。天然放射性元素有钋、氡、钫、镭、锕、钍、镤和铀8个元素。
随便看	kinematical reference system kinematic astronomy kinematic base kinematic cosmology kinematic density kinematic density wave kinematic distance kinematic equations of a moving particle kinematic formula kinematic geometry kinematic graph kinematic measure kinematic parallax kinematic positioning kinematics kinematics equation kinematic sign of ductile shear zone kinematics of a particle kinematics of a rigid body kinematics of deformation kinematics of earthquake sources kinematics of search kinematic space kinematic Sunyaev Zel'dovich effect kinematic theory of crystal growth

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