KS B ISO 14660-2-2014 产品几何量技术规范.几何要素.第2部分:圆柱体和圆锥体的提取中心线、提取中心面和提取要素的局部尺寸
Geometrical product specifications(GPS) — Geometrical features — Part 2: Extracted median line of a cylinder and a cone, extracted median surface, local size of an extracted feature