-
把管端做成钟口状可使气流更畅通。
Belling out the end of the tube will permit a freer passage of air.
youdao
-
其内容包括：1、泥管吸口处泥浆的形成过程。
They include: 1. Model of the mixture forming in the cutter.
youdao
-
其内容包括：1、泥管吸口处泥浆的形成过程。
They include: 1. Model of the mixture forming in the cutter.
youdao