conchoid 的定义
Geometry.
- a plane curve such that if a straight line is drawn from a certain fixed point, called the pole of the curve, to the curve, the part of the line intersected between the curve and its asymptote is always equal to a fixed distance. Equation: r = b ± a sec.
更多conchoid例句
- The conchoid has been employed by later mathematicians, notably Sir Isaac Newton, in the construction of various cubic curves.
- Conchoid′al, pertaining to a conchoid: shell-like, applied to the fracture of a mineral; Concholog′ical, pertaining to conchology.