N a silvery-grey metallic element, artificially produced by bombardment of molybdenum by deuterons: used to inhibit corrosion in steel. The radioisotope technetium-99m, with a half-life of six hours, is used in radiotherapy. Symbol: Tc; atomic no: 43; half-life of most stable isotope, 97Tc: 2.6 × 106 years; valency: 0, 2, 4, 5, 6, or 7; relative density: 11.50 (calculated); melting pt: 2204°C; boiling pt: 4265°C 鍀
They named it Technetium to emphasize that it was artificially created with technology.
他们把它命名为 Technetium,是为了强调它是用人工和技术相结合而创造的。
Technetium-99 is obtained from Molybdenum-99.
锝- 99从钼- 99中获取。
They both have practical theory, deep technetium customers to recognize and trust.
他们既有理论又有实践,深锝广大客户的认可和信赖。
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