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| механическая безопасность (Alexander Demidov) | |||
механический предохранитель (оружия: In firearms, a safety or safety catch is a mechanism used to help prevent the accidental discharge of a firearm, helping to ensure safer handling.  wikipedia.org Сакурай Е.) | |||
| mechanical safety: 4 phrases in 1 subject |
| Transport | 4 |