分步压制
Step pressing
以上为机器翻译结果，长、整句建议使用 人工翻译 。
该角钢成型方法通过对被加工钢带的分步压制，从而将被加工钢带逐步压制成角钢。
The Angle iron forming method includes gradually pressing a processed steel belt into the Angle iron by carrying out pressing on the processed steel belt step by step.
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