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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 2019-1987 |
Fundamental parameters and technical requirements for audio tape recorders 磁带录音机基本参数和技术要求 |
China National Standards Technical requirements co |
 English PDF |
| GB/T 2789-1981 |
Technical requirements for network interface for the analogue microwave relay communication systems 模拟微波接力通信系统网路接口基本技术要求 |
China National Standards Technical requirements co |
English PDF |
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