rail_rolling_mill_有道手机词典

1.The high quality heavy rail must be produced by high precision rolling technology. The conventional technology of 2-h mill adopted in our country is difficult to produced it.
阐述了目前市场急需的高质量重轨必须实现高精度轧制，我国现有重轨厂采用二辊孔型轧制难以满足要求。
dict.yoduao.com