螺旋叶片固定在中心轴上形成一个整体置于螺旋锁风阀体的中间并与螺旋锁风阀体焊牢。
The spiral vane is fixed on the central shaft, forming a whole body which is disposed at the middle of the spiral air locking valve body and is firmly welded with the spiral air locking valve body.
螺旋叶片固定在中心轴上形成一个整体置于螺旋锁风阀体的中间并与螺旋锁风阀体焊牢。
The spiral vane is fixed on the central shaft, forming a whole body which is disposed at the middle of the spiral air locking valve body and is firmly welded with the spiral air locking valve body.
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