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Francium is the densest of the Alkali Metals and also radioactive.

钫是碱金属最大,具有放射性。

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So little is known about it, because there is only about 1 ATOM OF FRANCIUM IN A CUBIC FOOT OF URANIUM ORE!

对它所知甚少,因为在1立方英尺,仅有1个钫原子!

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immunodepression, immunodiagnosis, immunodiagnostics, immunodiffusion, immunodominance, immunoelectroadsorption, immunoelectronmicroscopy, immunoelectrophoresis, immunoelestroosmophoresis, immunoeletroadsorption,

相似单词


3G, 401(K), a,

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