功: W=Pt
=UIt
=I^2Rt
=U^2t/R
=FS
功率:P=W/t
=UI
=I^2R
=U^2/R
=FS/t
=FV
W有用功
机械效率=------------------*100%
W总功
功跟功率的转化公式是 P=W/t
W=Pt
功: W=Pt
=UIt
=I^2Rt
=U^2t/R
=FS
功率:P=W/t
=UI
=I^2R
=U^2/R
=FS/t
=FV
W有用功
机械效率=------------------*100%
W总功
功跟功率的转化公式是 P=W/t
W=Pt