If it used this circumference automatic control system, the spiral welded pipe diameter could be controlled automatically.
若采用螺旋焊管周长自动控制系统可以实现自动化控制螺旋焊管的直径。
If it used this circumference automatic control system, the spiral welded pipe diameter could be controlled automatically.
若采用螺旋焊管周长自动控制系统可以实现自动化控制螺旋焊管的直径。
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