波纹管是一类子午线呈波纹状的旋转壳，作为弹性敏感元件和柔性连接件在航空仪表和管道工程中起着重要的作用。
Bellows, a shell of wrinkled meridian of revolution, is commonly used as an elastic-sensitive element in aircraft meters, and a flexible joint in pipeline systems.
分析了沉管隧道管段连接方式对隧道动力特性的影响，研究了管段弹性连接减震效果；
The influence of the joint form was analyzed, and the damping effects of the elastic joint were studied.
胶线分别穿过两排定位管，连接靠背和坐垫的硬塑料通风管、木珠和弹性边框；
Rubber wire through these two rows of fixing tubes connects ventilating tube of chair back and cushion wooden beads and elastic frame.
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