This paper briefly desr ibes the good properties and economical profit of cold-rolled and twisted bars.

本文简要介绍冷轧扭钢筋的优良性能和经济价值。

youdao

This paper briefly desr ibes the good properties and economical profit of cold-rolled and twisted bars.

本文简要介绍冷轧扭钢筋的优良性能和经济价值。

youdao