large span shallow tunnel
英
美
- 大跨径隧道
双语例句
- The double-curved arch bridge is a bridge type for medium and small span.
钢筋混凝土双曲拱桥是中小跨径常用的拱桥形式。 - Most wings have a different chord at different positions along their span.
大多数机翼在他们跨径的不同位置有着不同翼弦长度。
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