Home / Standards / GBT 24630.2-2009 GBT 24630.2-2009 Geometrical product specifications (GPS) — Flatness — Part 2: Specification operators 产品几何技术规范 平面度 第2部分:规范操作集 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A