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| explosion-protected electrical apparatus | |||
| explosion-proof electrical equipment; flame-proof electrical equipment | |||
| permissible apparatus; explosion-proof electric apparatus; explosion-proof electric equipment | |||
| electric apparatus for explosive atmosphere; electrical apparatus for explosive atmosphere | |||
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| electrical apparatus for explosive atmospheres | |||
| 防 爆电气设备: 3 phrases in 2 subjects |
| Electronics | 2 |
| Nautical | 1 |