... 机内巷识别系统 built-in lane identification system 内装闸门 built-in sluice 与发动机制成一体的泵 built-on pump ...
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There are many sluices built in tidal estuary, Zhejiang province, in which an important problem is scour protection for soft foundation of sluice downstream.
浙江省的感潮河口水闸众多，其闸下软基防冲是众人最关心的问题。
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