单词	bottom rib
释义	bottom rib 下面的凸缘
随便看	tunnel a hill Tunnel air tunnel airstream tunnel alignment by laser tunnel along goal tunnel anchor tunnel anchorage tunnel-anchorage tunnel and blow up tunnel and ore pass development tunnel and undergroud engineering tunnel and underground engineering tunnel and underground engineering construction tunnel and underground project tunnel and underground works tunnel anemia tunnel a new subway tunnel angle tunnel annealing furnace tunnel announciating device tunnel anti-disaster equipment tunnel anti-disaster facilities tunnel aqueduct tunnel aqueduct system tunnel arch