Barcol indenter

例句：

1. 1. The barcol internter is used to create a tight fit around the pipe.
   缩口器用于在管道周围创造紧密的配合。
2. 2. The barcol internter was developed to improve the efficiency of oil extraction.
   缩口器的开发旨在提高石油开采的效率。
3. 3. The barcol internter was used in the construction industry for years.
   缩口器在建筑业中使用了多年。