柯林斯詞典parametric equations 1. N-PLURAL a set of equations expressing a number of quantities as explicit functions of the same set of independent variables and equivalent to some direct functional relationship of these quantities 蓡數(shù)方程 a circle x2+y2=r2 has parametric equations x=r cos θ and y=r sin θ in terms of the parameters r and θ 返回 parametric equations