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Wikipedia definition
1. Nuclear depth bombA Nuclear Depth Bomb (NDB) is the nuclear equivalent of the conventional depth charge and can be used in Anti-Submarine Warfare (ASW) for attacking submerged submarines. The Royal Navy, Soviet Navy and United States Navy had nuclear depth bombs in their arsenals at one point.
Read “Nuclear depth bomb” on English Wikipedia
Read “核爆雷” on Japanese Wikipedia
Read “Nuclear depth bomb” on DBpedia

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