torus造句
And,ofcourse,itboundsthisdisc,butinsideofatorus.Eachhosecanbeexpandedandcontractedindependently.Doingsoinsequencealongthelengthofthetorusgeneratesforwardmotion.Inthisexample,thesurfaceisnotsimplyconne...
And,ofcourse,itboundsthisdisc,butinsideofatorus.Eachhosecanbeexpandedandcontractedindependently.Doingsoinsequencealongthelengthofthetorusgeneratesforwardmotion.Inthisexample,thesurfaceisnotsimplyconne...