1.The slurry exerts hydraulic pressure against the trench walls and acts as shoring to prevent collapse.
泥浆给窄槽壁施加水压，防止坍塌
2.A spiral of recession looms. Growth is necessary within this system just to prevent collapse.
由此可见经济增长之所以必须只是因为可以防止经济崩溃。
3.The Prevent Collapse of Erect-self Tower Crane Disassembled
自升式塔机装拆时翻塔事故的防止
4.Ensure the stability of bracing system to prevent collapse accident of form
保证支撑系统稳定防止模板坍塌事故