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粗轧机的轧制速度高,卷取和开卷的张力大,因此配备的电机功率就大。相反精轧机的开卷机和卷取机的电机功率就小。
Roughing mill rolling speed, coiling and unwinding tension, and therefore equipped with a large motor power. On the contrary the finishing mill uncoiler and coiler motor power is small.