This paper discusses the reason of scratch in the weld seam border of large OD. welded steel pipe, and analyses the method to reduce it.

讨论了大直径焊管焊缝边缘引起划痕的原因，分析减少焊缝边缘划痕的方法。

youdao

Home to more than 20 varieties of cactus-including its namesake, the organ pipe-organ pipe cactus National Monument lies between the Ajo Mountains of Arizona and the Mexico border.

烛台掌国家纪念园位于亚利桑那州和墨西哥边境交界处的阿霍山脉，是包括烛台掌在内超过20种仙人掌的家园。

youdao

The previous route of the Keystone pipeline would have crossed the U.S. border in Montana, shortcutting an existing pipe that enters the United States in North Dakota.

CNN: Keystone pipeline builder proposes new route