溢: overflow; spill道: road; way; route; path溢道: spillway溢道,溢口: spill way溢道桥: spillway bridge轨道顶: toof rail巷道顶: roofing冰积溢道: glacial spill-way虹吸溢道: siphon spillway腿洞溢道: tunnel spillway溢道；溢洪道: spillway弹道顶点: apex of the trajectory; apex of trajectory; peak trajectory; top of the trajectory井道顶部: well headroom流道顶出器: runner ejector set隧道顶板: tunnel roof隧道顶线: tunnel top line弯道顶点: apex of bend弯道顶端: pole巷道顶板: back溢洪道顶: crest of spillway轨道顶千斤顶: track jack越过弹道顶点: go over the top冰流溢口；冰积溢道: glacial spill-way设闸的溢洪道顶: obstructed crest of spillway坑道顶儿用柱子顶着: the pillars sustain the roof of the pit. go against
