1)timbered shaft,支架竖井2)vertical shaft frame,竖井架3)Drilling tower for Shaft,竖井凿井井架4)construction shaft,施工竖井架5)supporting well-frame,支承井架6)derrick leg,井架支腿
用法例句
In order to optimize the vertical shaft frame of hyperbola cooling tower of reinforced concrete, an universal program for calculating vertical shaft frames of tower installations are developed on the basis of structural mechanics.
