平面距离等比例线法
equiratio method based on plan
法线等距离线法
normal equidistance method
等距线等距面
offset curve and offset surface
波面法线椭球
elliposoidal pumping mirror
副法线球面指标
spherical indicatrix of binormal
球面等距投影模型
spherical equidistance projection
球面距离
spherical distance
spherical surface distance
the distance between the two points on spherical s
sphere distance
主法线球面指标
spherical indicatrix of principal normal
前体水线面面积系数
forebody waterplane coefficient
水翼小水线面面积船
hydrofoil small waterplane area ship
梯形断面水面线
water surface profiles of trapezoid