“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	Shizhi Shi Zhiren Shi Zhiyuan Shi Zhong Shi Zhongqin Shizhong Qu Shizhong Shan Shizhongshan Caves Shizhong Shanfang Studio’s Collection of Seals Shizhong Zhige Shi Zhonɡhenɡ Shizhou’s Poetry Critique Shizhuanshan grottoes Shizhu Tujiazu Zizhixian Shizhuzhai Studio's Calligraphy and Painting Manual Shizhuzhai Studio's Stationery Manual Shizhuzhai Studio’s Calligraphy and Painting Manual Shizi Shan Shizitan Site Shiziyang Tunnel Shi Zongle Shizong Xian Shi Zongyuan Shizuishan Shi Shizu-Mao

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