A.正比 B.反比 C.無關(guān)
A.uPM(t)=UCcos(ωCt+mfsinΩt) B.uPM(t)=UCcos(ωCt+mpcosΩt) C.uPM(t)=UC(1+mpcosΩt)cosωCt D.uPM(t)=kUΩUCcosωCtcosΩt