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单词 watt
释义 watt
n. the SI unit of power, equivalent to one joule per second, corresponding to the rate of energy in an electric circuit where the potential difference is one volt and the current one ampere.
Usage
Symb.: W.
Phrases and idioms
watt-hour the energy used when one watt is applied for one hour.
Etymology: J. Watt, Sc. engineer d. 1819
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更新时间:2025/3/10 18:27:36