他向下探视竖井，就在底部，大概有20英尺高吧，一根粗大的陶瓷管道毗邻着囚楼。
He peers down into the shaft. At the very bottom, maybe 20 feet down, a big ceramic pipe runs the length of the cellblock.
锻造生产了大量的工业组件，例如，选择题，酒吧，集线器，纱锭，竖井，戒指和管道部分。
Forging produces a great many industrial components such as blanks, bars, hubs, spindles, shafts, rings and piping parts.
敷设在室内、电缆沟、管道、竖井等能承受较大机械拉力等固定场合。
For laying indoors, in trenches, in ducts and down well , able tobear heavier pulling force, andfor fixed installation.
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