每台粗格栅前后渠道内设有铸铁镶铜方闸门，以备检修时用。
Cast iron square gates with bronze inlaid, for maintenance, are installed before and behind each coarse bar screen.
方井的深度是这样设计的，圣诞树的总闸门从地表水平容易到达。
The depth of the cellar is such that the master valves of the Christmas tree are easy to reach from ground level.
通过水工模型试验，一方面优化溢洪道顶部轮廓，另一方面降低溢洪道顶部改造和新闸门的成本。
Through hydraulic model tests, the spillway crest profile was optimized so as to achieve the required capacity on one hand and to minimize the cost of the spillway crest and the new gate on the other.
通过水工模型试验，一方面优化溢洪道顶部轮廓，另一方面降低溢洪道顶部改造和新闸门的成本。
Through hydraulic model tests, the spillway crest profile was optimized so as to achieve the required capacity on one hand and to minimize the cost of the spillway crest and the new gate on the other.
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