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The engineers installed a bear-trap dam to raise the upstream water level and deepen the river channel for navigation.
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The engineers installed a bear-trap dam to raise the upstream water level and deepen the river channel for navigation.
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Related words
bear-trap dam
Noun
Japanese Meaning
河川の浅瀬を深くするために用いられる可動式のダム。上昇させるときは、上部で二枚の構成部品（葉）が互いに接し合い、下降させるときはその葉が互いに重なり合うように折りたたまれる構造をしている。
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