虹吸管是作为船坞灌水排水的一种新型式，具有结构简单、防冰防沙、断流迅速的优点。

As a new type of drainage and irrigation of the dock, siphon has the advantages of simple structure, protection against sand and water and rapid set-off.

youdao

虹吸管是作为船坞灌水排水的一种新型式，具有结构简单、防冰防沙、断流迅速的优点。

As a new type of drainage and irrigation of the dock, siphon has the advantages of simple structure, protection against sand and water and rapid set-off.

youdao