顶锻时间 upset time；upsetting time 有电顶锻时间 upset current time 无电顶锻时间 upset current-off time ..
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upset current-off time 无电顶锻时间
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This series use screws to compress the work pieces. The welding process is finished under the reasonable current gear and upset force in the man-controlled time.
该系列对焊机采用螺杆压紧工件，选择合适的电流档位和顶锻力，人控焊接时间完成焊接过程。
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