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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| SJ 20920-2005 |
General specification for the ionospheric refraction correction system for exterior ballistic measurement by differential Doppler 外弹道测量差分多普勒法电离层折射修正系统通用规范 |
China Electronics
Standards General specification differential |
 English PDF |
| SJ 20595-1996 |
General specification for differential ware used in electronic equipments 电子设备差动器通用规范 |
China Electronics
Standards General specification differential |
English PDF |
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