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| protection system A series of procedures and devices designed to preserve people, property or the environment from injury or harm | |||
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| suojausjärjestelmä: 6 phrases in 6 subjects |
| Communications | 1 |
| Electronics | 1 |
| Energy industry | 1 |
| Information technology | 1 |
| Microsoft | 1 |
| Nuclear physics | 1 |