多节柱塞一油管副间的密封能力由特殊结构的柱塞密封元件——封隔器保证。

Special packers are used for sealing between the multi -plunger and tubing string.

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针对物镜光学元件装配过程中接触副定位对准精度、接触过程中残余摩擦力对面形的影响等问题提出了解决方案。

Assembly method for the Optic is designed and the solution for problem about positioning and aligning of the contact coupling and trapped friction which affect the figure are put forward.

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