This paper briefly describes the new shaft type scrap preheating system called UL BA developed by Japanese Nippon Steel Corporation.

文章简要介绍了日本新日铁开发的新型竖炉式废钢预热系统，即：UL-BA方式预热装置。

youdao

Here was the birthplace of cave culture of Ba people in ancient time and also the shelter and base of Mt. Huaying guerilla in anti-Japanese war and the liberation war before the year 1949.

这里曾是远古巴人洞穴文化的发祥地，也是华蓥山游击队的藏身地和根据地。

youdao

Here was the birthplace of cave culture of Ba people in ancient time and also the shelter and base of Mt. Huaying guerilla in anti-Japanese war and the liberation war before the year 1949.

这里曾是远古巴人洞穴文化的发祥地，也是华蓥山游击队的藏身地和根据地。

youdao