This article discusses the wear pattern of the lower cone of a hydroclone and the causes of the drop of its separating efficiency.
论述了水力旋流器下锥筒的磨损规律及其分离效率下降的原因；
The center of the lower part of the main body is equipped with a cone inner hole. The head of the inner hole is hemi-spherical.
主体的下部中心设有圆锥形内孔，该内孔的头部为半球形。
The utility model discloses an upper circular cone double-jointed translational artificial lower limb connecting fitting that pertains to the fixed connecting fitting.
本实用新型公开了属于固定连接件的一种上圆锥筒双接头平移下肢假肢连接件。
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