drawtube

drawtube

1. Step 1: Center the secondary mirror on the axis of the focuser drawtube.

把副镜中央置于调焦伸缩管的中轴。

2. The design of the structure of Caseegrain drawtube in space remote instrument was introduced.The product model was constructed using 3-D CAD technique.

摘要介绍了空间遥感仪器中卡塞格伦镜筒的结构设计，利用三维CAD技术构建了产品模型。

3. Abstract: The Periscope Drawtube will be bent because of the water resistance in sailing and this bend will cause the error of star measurement.

摘要： 潜艇潜望镜的镜筒在航行时受到水的阻力会产生弯曲变形，这种变形会造成潜艇对星体测量的误差;

4. Finally, inside this reflection of the secondary, you can see the focuser drawtube and your eye.

最后，在副镜的反射像中，你能看到调焦座的伸缩管和你的眼睛的像。

5. Realtime Measurement of Bend of Periscope Drawtube by Linear Array CCD

用线阵CCD实现潜望镜镜筒弯曲的实时测量

6. Design and Lightweight Research of Cassegrain Drawtube in Space Remote Instrument

空间遥感仪器卡塞格伦镜筒的设计及轻量化研究