Technetium tetrachloride四氯化;四氯化鎝
radioactive technetium放射性锝
Technetium generators锝射线产生器
Technetium dioxide二氧化锝
Technetium chloride四氯化鎝;四氯化
Technetium star锝星
technetium m锝
Technetium 99m锝99m
technetium radiopharmaceuticals锝放射性药物
N（名词） 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