江画工太猩院 x=(t) (3推广r:{y=v(,呢点a,终点 z=0 () Pdx+Qdy+ rdz Plo(t), r(t), a(tlo(t) + eo(t), y(t), a(tly'(t +ro(t), r(t), a(to(tdt江西理工大学理学院 , , . ( ) ( ) ( ) (3) : α β ω ψ ϕ 推广 t起点 终点 z t y t x t ⎪⎩ ⎪⎨⎧ = = = Γ R t t t t dt Q t t t t P t t t t Pdx Qdy Rdz [ ( ), ( ), ( )] ( )} [ ( ), ( ), ( )] ( ) { [ ( ), ( ), ( )] ( ) ϕ ψ ω ω ϕ ψ ω ψ ϕ ψ ω ϕ β α + ′ + ′ = ′ + + ∫ ∫Γ