belling造句

It has belling heads of full specification from 50 to 630.
尤其是研制生产的扩管机,扩管头,规格齐全,质量可靠.

Belling out the tubes will permit a freer passage of air.
把管子做成钟状,可使气流更畅通.

I am leaving for Belling on a four - day tour.
我马上要去北京旅游4天.