(2 ) intersectioning algorithm of nurbs surface and general implicit surface is researched in which the parametric formula are substituted into the implicit surface equation and then get the nonlinear two-dimensional equation on parametric domain (2)實(shí)現(xiàn)了nurbs參數(shù)曲面與廣義的隱式曲面的求交算法并將其應(yīng)用于船體曲面與水線(xiàn)面的求交中。