单词 | drainage tunnel |
释义 | drainage tunnel At the same time, the tunnel vault was rehabilitated, while the drainage tunnel was rebuilt. Retrieved from Wikipedia CC BY-SA 3.0 Often thought to be a railway tunnel, it was actually constructed only as a drainage tunnel so that water can be removed from the farmlands. Retrieved from Wikipedia CC BY-SA 3.0 It boasted a vast system of canals and flumes, its 7,800-foot drainage tunnel was termed a feat of engineering skill. Retrieved from Wikipedia CC BY-SA 3.0 This required building a drainage tunnel and delayed work for eighteen months. Retrieved from Wikipedia CC BY-SA 3.0 Rather, the dam was designed with ten seepage pipes that drain into a drainage tunnel passing through the dam's three spillways. Retrieved from Wikipedia CC BY-SA 3.0 |
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