(us) = mL 1 gal(imp) = L 1 gal(us) = L 温度单位(°F-32)X5/9=℃ = ℃ 功及能量单位1 Nm = 1 J 1 kgm = J 1 kW/hr = MJ 1 lbft = J 功率单位1 Nm/sec = 1 W 1 lbft/sec ...
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