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() (ia̍h)watt () (ēng) (lâi)表示 (piáu-sī)功率 (kong-lu̍t) (power) (ê)單位 (tan-ūi),是1 (chióng) (SI)組合 (cho͘-ha̍p)單位 () (chò)W。 1 W是 (ta̍k) (bió)kang1 joule (khiā) (kóng):

1 W = 1 J/s = 1 N m / s = 1 kg͘m2͘s−3

運動員 (Ūn-tōng-oân)會當 (ē-tàng)發揮 (hoat-hui) (kaù)900 W。汽車 (Khì-chhia)的iăn-jín會當到100,000 W。

() (chhù) (lāi)電火球仔 (tiān-hoé-kiû-á), iok-liōng 40 - 100 (chek) (kap)W (kāng)意思 (ì-sù)