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tech·ne·ti·um AHD[tĕk-nēʹshē-əm, -shəm] D.J.[tekˈniːʃiːəm, -ʃəm]K.K.[tɛkˈniʃiəm, -ʃəm]n.Symbol Tc （名词）符号 Tc - A silvery-gray radioactive metal, the first synthetically produced element, having 14 isotopes with masses ranging from 92 to 105 and half-lives up to 2.6×106 years. It is used as a tracer and to eliminate corrosion in steel. Atomic number 43; melting point 2,200°C; specific gravity 11.50; valence 0, 2, 4, 5, 6, 7. See table at element 锝：一种银灰色放射性金属，是第一个人工合成的元素，有十四个原子量从92到105且半衰期高达2.6×106年的同位素。用作放射追踪剂并可消除钢铁腐蚀现象。原子序数43；熔点2,200°C；比重11.50；原子价0, 2, 4, 5, 6, 7 参见 element
- From Greek tekhnētos [artificial] 源自 希腊语 tekhnētos [人工的]
- from teknasthai [to make by art] 源自 teknasthai [人工制造]
- from tekhnē [art] * see technical 源自 tekhnē [人工] * 参见 technical
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