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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 39643-2020 |
Geometrical product specifications (GPS)—systematic errors and contributions to measurement uncertainty of length measurement due to thermal influences 产品几何技术规范（GPS） 长度测量中温度影响引入的系统误差和测量不确定度来源 |
China National Standards systematic |
 English PDF |
| GB/T 39529-2020 |
General technical requirements for systematic windows and doors 系统门窗通用技术条件 |
China National Standards systematic |
English PDF |
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