求翻译：通过设计粗轧孔型，增上1立2平中轧机组，优化中轧、精轧轧制规程、创新改进轧机轴承配置形式、设计新式扭转装置等多项改进，实现用165×165mm、165×225mm、165×280mm三种连铸坯轧制出宽度210～355mm及厚度1.8mm超薄热轧窄带钢，优化了产品结构，获得较好的经济效益。是什么意思？

Rough rolling pass by design, a Li 2 level on the increase in the mill group, optimizing rolling and finishing rolling schedule, innovation and improvement of the rolling mill bearing configurations, the new design to reverse the devices a number of improvements to achieve with 165 × 165mm, 165 × 22

Thick rolled through the design, and an additional hole on 1 and 2 in group-mill, gin, and optimization procedures, precision rolled mill rolling bearing Configuration innovation and improvement, and design new forms, such as reverse unit, many of the improvements for the 165 X 165 MM, 165 X 225 MM,

Through the design shaping pass, increases 1 to set up 2 evenly to roll over the unit, in the optimization rolls over, the finish rolling rolling regulations, the innovation improvement rolling mill bearing disposition form, the design new style reverse installment and so on many improvements, reali

Through design rough rolling hole type, increased Shang 1 vertical 2 flat in the mill group, optimization in the rolling, and fine rolling rolling point, and innovation improved mill bearing configuration forms, and design new reverse device, more items improved, achieved with 165x165mm, and 165x225

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