在滚轧棒坯上可能发现下列哪种缺陷？

Which of the following discontinuities might be found in rolled bar stock?

youdao

渐开线花键滚轧轮的设计是渐开线花键冷滚轧的关键技术。

The roller design is the key point for the cold rolling technology.

youdao

渐开线花键滚轧轮的设计是渐开线花键冷滚轧的关键技术。

The roller design is the key point for the cold rolling technology.

youdao