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гудок; свисток; сирена (сигнальные) |
号 : 188 phrases in 13 subjects |
Automobiles | 1 |
Communications | 3 |
Electronics | 1 |
Information technology | 1 |
Law | 3 |
Mathematics | 6 |
Nautical | 5 |
Radioengineering | 1 |
Rail transport | 21 |
Technology | 109 |
Telegraphy | 1 |
Telephony | 29 |
Television | 7 |