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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 39853.1-2021 |
Power quality measurement in power supply systems—Part 1: Power quality instruments (PQI) 供电系统中的电能质量测量 第1部分：电能质量监测设备（PQI） |
China National Standards PQ |
 English PDF |
| GB/T 9634.8-2018 |
Ferrite cores—Guideline on the limits of surface irregularities—Part 8: PQ-cores 铁氧体磁心 表面缺陷极限导则 第8部分：PQ型磁心 |
China National Standards PQ |
English PDF |
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