Accurate spread formulae must be studied out by experiments and regression according to different roll passes and different rolling mill layout.
实用的高精度宽展模型必须分不同的孔型系统和轧机布置形式，由现场实验和回归得到。
Accurate spread formulae must be studied out by experiments and regression according to different roll passes and different rolling mill layout.
实用的高精度宽展模型必须分不同的孔型系统和轧机布置形式，由现场实验和回归得到。
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