The extrusion theories of a single-screw extruder and the design theories of twin screw extruders have been summarized, and the particularity of the TSPE have been discussed also.

• 本文对单螺杆挤出机挤出理论和双螺杆挤出机设计理论的研究进行了综述，并对双螺杆磨浆机的特殊性进行了分析。