| 单词 | cadmium |
| 释义 | Word Frequency cadmium(ˈkædmɪəm) noun a malleable ductile toxic bluish-white metallic element that occurs in association with zinc ores. It is used in electroplating, alloys, and as a neutron absorber in the control of nuclear fission. Symbol: Cd; atomic no: 48; atomic wt: 112.411; valency: 2; relative density: 8.65; melting pt: 321.1°C; boiling pt: 767°C Word origin C19: from New Latin, from Latin cadmīa zinc ore, calamine, referring to the fact that both calamine and cadmium are found in the ore |
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