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单词
decibels above 1 femtowatt
释义
decibels above 1 femtowatt
decibels above 1 femtowatt
[
′des·ə·bəlz ə¦bəv ¦wən ′fem·tō‚wät
]
(electricity)
A power level equal to 10 times the common logarithm of the ratio of the given power in watts to 1 femtowatt (10
-15
watt). Abbreviated dBf.
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更新时间:2025/10/30 12:47:10