| 单词 | nickel |
| 释义 | Word Frequency nickel(ˈnɪkəl) noun 1. a malleable ductile silvery-white metallic element that is strong and corrosion-resistant, occurring principally in pentlandite and niccolite: used in alloys, esp in toughening steel, in electroplating, and as a catalyst in organic synthesis. Symbol: Ni; atomic no: 28; atomic wt: 58.6934; valency: 0, 1, 2, or 3; relative density: 8.902; melting pt: 1455°C; boiling pt: 2914°C 2. a US and Canadian coin and monetary unit worth five cents verbWord forms: -els, -elling, -elledWord forms: US -els, -eling or -eled 3. (transitive) to plate with nickel Word origin C18: shortened form of German Kupfernickel niccolite, literally: copper demon, so called by miners because it was mistakenly thought tocontain copper |
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