English translation for "tunnel-to-tunnel shaft"

暗井

Similar Words：

"tunnel, underground mine" English translation, "tunnel-back" English translation, "tunnel-cap tray" English translation, "tunnel-fiber" English translation, "tunnel-like" English translation, "tunnel-type diverter" English translation, "tunnel-vision" English translation, "tunnel-visioned" English translation, "tunnel-visions" English translation, "tunnel-wound armature" English translation