| 单词 | terbium |
| 释义 | Word Frequency terbium(ˈtɜːbɪəm) noun a soft malleable silvery-grey element of the lanthanide series of metals, occurring in gadolinite and monazite and used in lasers and for doping solid-state devices. Symbol: Tb; atomic no: 65; atomic wt: 158.92534; valency: 3 or 4; relative density: 8.230; melting pt: 1356°C; boiling pt: 3230°C Derived forms terbic (ˈterbic) adjective Word origin C19: from New Latin, named after Ytterby, Sweden, village where it was discovered |
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