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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| SN/T 5172-2021 |
Vector control level of food production and processing units at frontier ports {译} 国境口岸食品生产加工单位病媒生物控制水平 |
China Import&Export Inspection Industry
Standards Unit level |
 English PDF |
| SJ/T 11212-1999 |
Measurement of quartz crystal unit parameters. Part 6: Measurement of drive level dependence (DLD) 石英晶体元件参数的测量 第6部分：激励电平相关性（dld）的测量 |
China Electronics
Standards Unit level |
English PDF |
| DL/T 452.4-1991 |
(Unit-level code) |
China Electricity & Power
Standards Unit level |
English PDF |
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