1. \u0039\u0031\u0031\u67E5\u8BE2\u00B7\u82F1\u8BED\u5355\u8BCD
1. arch dam：arch 拱 | arch dam 拱坝 | arched beam 拱梁
2. 拱坝是什么意思
2. Concrete Arch Dams：预应力:Prestressed concrete | :拱坝:Concrete Arch Dams | 疏浚:concrete gravity dam
3. Arc Dam：Gravity dam 重力坝 | Arc dam 拱坝 | Embankment Dam 土石坝