双头螺杆泵比单头螺杆泵工作腔室多，泄漏少，泵的排量大，效率高。
The twin screw pump is of the properties of less leakage, big displacement and effectivity.
分析了双头双螺杆泵密封腔的密封原理。
为提高塑化产量，采用双头机头机筒螺杆两道机筒进料口，都作了特殊设计，以便于吃料和排气，两道机筒都装在专用加料轴承座上。
In order to improve the plastification output, we adopt double-head of cylinder screw stem and two-feed chute. The two chute of the cylinder are both fixed on the special feed shaft stand.
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