短语词组短语arch abdomen dam 腹拱坝Arch -dam 弓形门arch gravity dam 重力拱坝;拱形重力坝arch buttress dam 拱式支墩坝rcc -arch-dam 碾压混凝土拱坝high -arch-dam 高拱坝multi -arch concrete dam 混凝土连拱坝double -curvature arch rcc dam 碾压混凝土双曲拱坝thick arch dam 重力拱坝 返回 arch dam