The pipe wall holds the universal joint, and closes end of the tube close to the universal joint.

管壁，其保持上述卷材用万向接头，并且封闭上述管的靠上述卷材用万向接头的一侧；

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The pipe wall holds the universal joint, and closes end of the tube close to the universal joint.

管壁，其保持上述卷材用万向接头，并且封闭上述管的靠上述卷材用万向接头的一侧；

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