泄洪孔 meaning in English

sluice

A method of classifying these structures is proposed , which is suitable for introducing a mathematic model for optimizing the layout of these structures
对高拱坝坝身泄洪孔口，提出了适合建立数学优化模型的分类方法； 2
The optimization of laying out these structures , paths of flow jets and a water cushion pool for a high arch dam is first discussed systematically in this paper
本文首次系统地对高拱坝坝身泄洪孔口、泄流过程以及坝下水垫塘的布置优化问题进行了讨论。主要内容和成果有1
A mathematic model is first introduced for optimizing the layout of flood - release structures in a high arch dam after an idea of the broad sense of construction costs for unit area gate is introduced , and the optimal computation of the layout of flood - release structures in xiao - wan arch dam demonstrates that this model is reasonable ; 4
在引入了闸门广义单位面积造价的基础上，首次建立了高拱坝坝身泄洪建筑物布置的数学优化模型，并通过对小湾拱坝坝身泄洪孔口的优化布置计算，说明所提出的数学优化模型是可用的； 4