船撞到排水管的管壁而支离破碎。

Then the boat struck against the wall of the drain and broke into pieces.

youdao

一种新型水管，包括管壁和具有管内腔的管状体，其特征在于，所述的管壁(1)上沿轴向设有至少一条凹陷槽(2)。

A novel water pipe, comprising a pipe wall and a tubular body with a pipe cavity, wherein the upper edge of the pipe wall (1) is axially provided with at least one groove (2).

youdao

一般而言，同一规格中，管壁较厚的是热水管，较薄的是冷水管，使用时必须分清楚；

Generally, the same specifications, the wall thickness of the hot water, cold water layer is to manage the use of a need to make a distinction ;

youdao

本发明提供一种排水管。所述排水管包括一个主管，所述主管两端设有安装部，所述主管的管壁上设有螺旋筋。

The invention provides a drain pipe comprising a main pipe, wherein installing parts are arranged at both ends of the main pipe and a spiral rib is arranged on the pipe wall of the main pipe.

youdao

本发明提供一种排水管。所述排水管包括一个主管，所述主管两端设有安装部，所述主管的管壁上设有螺旋筋。

The invention provides a drain pipe comprising a main pipe, wherein installing parts are arranged at both ends of the main pipe and a spiral rib is arranged on the pipe wall of the main pipe.

youdao