短語詞組短語hollow arch -gravity dam 空腹重力拱壩gravity arch dam 重力拱壩gravity -arch dam 重力拱壩RCC Gravity -Arch Dam 碾壓混凝土重力拱壩concrete gravity -arch dam 混凝土重力拱壩vierendeel gravity -arch dam 空腹重力拱壩 返回 arch gravity dam