功率
1千克力·米/秒(kgf·m/s)=9.80665瓦(W)
1米制马力(hp)=735.499瓦(W)
1卡/秒(cal/s)=4.1868瓦(W)
1英热单位/时(Btu/h)=0.293071瓦(W)
