对于加工圆周分布的球窝，没有适合的通用或专用设备。
There is no general or special equipment suitable for machining circular-distributed ball -pocket.
本文探讨了通过沿圆周分布不同形状的固定导叶来降低损失，以克服此种蜗壳自身的不足，提高转轮的水力效率。
Different geometry of stay vanes applied to reduce loss is discussed in the paper, so as to compensate lack of spiral casing and improve hydraulic efficiency.
研制了一种在以激光束为中心轴的圆周方向均匀对称分布四个具有同轴汇聚气的双层送粉管的送粉喷嘴。
Developed a feeding nozzle which have four double-feeding pipes with co-axial shaping gas distributes on circle orientation of laser beam with uniformity and symmetry.
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