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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 13511.3-2019 |
Assembled spectacles—Part 3:Single-vision near-vision spectacles 配装眼镜 第3部分：单光老视成镜 |
China National Standards 3:Single |
 English PDF |
| GB/T 14598.7-1995 |
Electrical relays--Part 3:Single input energizing quantity measuring relays with dependent or independent time 电气继电器 第3部分:它定时限或自定时限的单输入激励量量度继电器 |
China National Standards 3:Single |
English PDF |
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