另外，叶片轮的平面平行于极轴，这被称作是逆风设计。

In addition, the plane of the blades is parallel to the pole.This is called an upwind design.

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另外，叶片轮的平面平行于极轴，这被称作是逆风设计。

In addition, the plane of the blades is parallel to the pole. This is called an upwind design.

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单螺杆压缩机由一个圆柱螺杆和两个对称布置的平面星轮组成啮合副，装在机壳内。

Single screw compressor cylinder by a screw and two symmetrical layout of the plane composed of stars round of meshing pair, installed in the chassis.

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