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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 12085.15-2010 |
Optics and optical instruments - Environmental test methods - Part 15: Combined digitally controlled broad-band random vibration and dry heat or cold 光学和光学仪器 环境试验方法 第15部分：宽带随机振动(数字控制)与高温、低温综合试验 |
China National Standards digitally |
 English PDF |
| GB/T 18472-2001 |
Test signals for digitally encoded colour television system 数字编码彩色电视系统用测试信号 |
China National Standards digitally |
English PDF |
| GB/T 17789-1999 |
Procedures for simultaneous transmission of data and digitally encoded voice signals over the PSTN or over 2-wire leased point-to-point telephone type circuits 在PSTN或二线点对点租用电话型电路上同时传送数据和数字化编码语音信号的规程 |
China National Standards digitally |
English PDF |
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