| 词汇 | watt |
| 词根词缀 | 词源： unit of electrical power, 1882, in allusion to James Watt (1736-1819), Scottish engineer and inventor. Wattage is recorded from 1903. 词根记忆： n. 瓦,瓦特It's a watt meter.这是个瓦特计. |
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