A new over-long pipe cold drawing mill with three pipes drawn simultaneously, which has an unique structure and a display device for drawing load, is described.

本文介绍了一种结构独特，可显示拔制负荷的新型超长三线冷拔机。

youdao

Criticism of the disaster has sprung in part from decisions made over the design of the BP well, which used a single pipe, known as a "long string", that ran from the sea floor to the bottom of the well.

BBC: Oil spill: BP 'did not sacrifice safety to save money'