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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 34999-2017 |
Technical requirements and measurement methods for digital audio recording system in broadcast center 广播中心数字音频录制系统技术要求和测量方法 |
China National Standards Method measurement center |
 English PDF |
| GB/T 19658-2013 |
Method of measurement of center beam intensity and beam angle(s)of reflector lamps 反射灯中心光强和光束角的测量方法 |
China National Standards Method measurement center |
English PDF |
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