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| International Standard Category: Linear and angular measurements in general |
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 ;
| Category No.: | 17.040.01 | Valid Status: | valid |
| Issued Organization: | SAMR and SAMR | Issued Date: | 2020-12-14 |
| Implemented Date: | 2021-7-1 | Abolished Date: | |
| Superseded Standard.: | Superseded Date: |
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