GB/T 40742.4-2021
China national
standard english version:
GB
中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 40742.4-2021
Geometrical product specifications (GPS)—Geometrical precision verification—Part 4:Evaluation of dimension and geometrical error,discriminant pattern of minimum zone 产品几何技术规范(GPS) 几何精度的检测与验证 第4部分:尺寸和几何误差评定、最小区域的判别模式
Issued Date:2021/10/11
Implemented Date:2022/5/1
Issued by:
The Standardization Administration of the People's Republic of China