Active outside the side out of the pump screw driven by a prime mover.

一端伸出泵外的主动螺杆由原动机驱动。

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The stresses inside and outside the core of a screw dislocation are obtained.

得到了螺位错芯区内、外的应力场。

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A new type screw stem welder with capacitance stored energy welding, being high efficiency and used to the production for the pipe with stems outside is introduced.

介绍了为适应钉头管生产而开发研制的新型高效电容储能螺柱焊机。

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