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| Russian | English |
| исследование подводного пространства | aquanautics |
| комитет по исследованию обнаружения подводных лодок | ASDIC |
| подводные исследования | studies of the sea floor (or "ocean" or "lake" or ... Liv Bliss) |
| подводные исследования | submarine studies (Comment by Liv Bliss: OK, but watch your context: this could very easily be understood as "studies relating to submarines") |