单词 | Davy, Sir Humphrey |
释义 | Davy, Sir Humphrey From Longman Dictionary of Contemporary EnglishDavy, Sir HumphreySir Humphrey DavyDa‧vy, Sir Hum‧phrey /ˈdeɪvi, ˈhʌmfri/(1778–1829) a British scientist who invented the Davy lamp, an oil lamp that could be used in coal mines without causing explosions. He also discovered several elements (=basic chemical substances), including calcium, sodium, and potassium. |
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