介绍一种挤压机螺杆充满长度的图解计算作图法，即根据挤压机的工作特性曲线图来计算螺杆的充满长度。
The article introduces a graphic analysis method of calculating the filled length of the screws on basic of the operating characteristics.
螺杆泵因工作螺杆长度较大，刚性较差，容易引起弯曲，造成工作失常。
Screw pump screw length is larger because of the job, poor rigidity, easy to cause bending work properly.
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