哈沙什解释说，沉管式的设计要求大部分的隧道建筑在干坞上，干坞漂浮并沉没在水里。
Hashash explains that the immersed-tube design requires largeportions of the tunnel to be built on a dry dock that is floated outinto the water and sunk.
本文在试验研究的基础上，探讨了在泄洪排沙建筑物中采用挑坎等人工掺气设施后的浑水掺气特性。
On the basis of experiment study, the characteristics of sediment flow aerated artificially in a outlet structure are discussed in this paper.
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