staircase lock
A set of locks on a waterway canal which rise steeply, and consisting of lock gates where the top gate of one lock is also the bottom gate of the next lock, not having a pound between each level.
A surname.
Alternative form of hogleg
plural of witchling
技術者たちは、各段の上側のゲートが次の段の下側のゲートも兼ね、各段の間に水位を保持する区間がない急勾配の階段式閘門を点検し、船が連続した水室を通過する際にゲートが安全に作動することを確認した。
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