counterfort drain排水扶垛
counterfort dmorning后扶垛坝
counterfort dam后扶垛坝
counterfort dare后扶垛坝
counterfort abaloneyutmen扶壁式桥台
counterfort dherehas后扶垛坝
counterfort dfeel后扶垛坝
mud counterfort泥浆护壁
counterfort virescence绿化护坡
N（名词） a strengthening buttress at right angles to a retaining wall, bonded to it to prevent overturning or to increase its bending strength 拱柱; 扶垛 [civil engineering]