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| level of protection | |||
| degree of protection; protection glass; protection grade | |||
| protection lever | |||
| 保护等级: 7 phrases in 5 subjects |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Information technology | 3 |
| Multimedia | 1 |
| Securities | 1 |
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