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| Chinese National Standard Category: Ambient conditions |
| English Title: | Condition and Method of Environment Test for Electronic Device - Temperature Variation Test |
| Chinese Title: | 电子设备环境试验条件和方法 温度变化试验 |
| Standard No.: | QJ 1239.4-1987 |
| Category No.: | V06 |
| Issued by: | |
| Issued on: | 1987-07-02 |
| Implemented on: | 1986-10-1 |
| Status: | valid |
| Superseded by: | |
| Superseded on: | |
| Abolished on: | |
| Superseding: | GJB 150A |
| Word Count: | 2500 words |
| Similar Standards: |
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