| 释义 |
Davy, Sir Humphrey Sir 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.Da·vy, Sir Hum·phreySyllable |