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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同样请告知你们能做螺杆的最大长度和直径是多少？

Also inform us what is the maximum size of screws you can make in terms of length and dia.

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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.

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