| 摘要 |
Rotary extruded appts. comprises: (a) a housing having a generally elliptical interior bore, a feed inlet and a discharge outlet, (b) a cylindrical rotor defining first and second clearance zones, extending along the axial length of the rotor, the second zone being smaller than the first, and (c) a gear pump for increasing the discharge pressure of material through the outlet and reducing the internal pressure in the housing.
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