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 design of the Buddha in the central depression Waida a new shaft into the return air.
设计在井田中部佛洼新建一进回风立井。
The utility model relates to a filter-element of air-filter comprising casing, central shaft and folding filter-paper.
本实用新型涉及一种空气过滤器滤芯，由壳体、中心轴和折叠式滤纸组成。
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