采用双鼓，信号不断从一个鼓传递到另一个鼓就如相加的过程。
A pair of drums is used, and the signals are transformed successively from one to the other as the summation proceeds.
采用张力放线，张力机采用双鼓轮式，要有手闸，全液压制动。
Tension setting out shall be employed and the tensioner shall be double-wheel and fully hydraulic type with hand brake .
平辊立轧可显著减小坯料侧面双鼓形及折叠，倒棱轧制可有效消除坯料侧面双鼓形。
V rolling may decrease efficiently side overlap of plate, chamfer rolling may remove complately side overlap of plate.
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