大面积的玻璃顶结构长达250米，覆盖了所有轨道。
The largely transparent roof structure which covers all the tracks over a length of 250 meters.
在引入平均轨道概念的基础上，提出了一种针对低轨道卫星的过顶与成像区域时间的快速预报算法。
On the basis of mean orbit concept, a fast algorithm for the prediction of LEO satellite passes and image opportunity is presented.
该机采用蜗轮-蜗杆机构、铸模圆盘-脱模顶杆及凸轮轨道、并配有高效冷却水循环处理系统。
This machine is equipped with turbine - screw mechanism, mould casting disk-tripper pin and CAM path, as well as cooled water recycling treatment system.
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