高空平台(HAPS)通信系统是近年来正处于先期研究的新型信息系统。

The high altitude platform stations (HAPS) is a new information system that has been developed at an early stage in recent years.

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本文在先期研究的基础上对行星齿环式无游梁抽油机进行了更加深入的研究。

In this thesis, the author performed further study on the non-beam pumping unit of planetary gear-ring type based on the previous study.

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论文结合十一五总装备部跨行业预研项目“二维弹道修正技术”开展先期研究的，属于引信智能探测技术与智能控制技术研究领域。

This article basing on pre-research project "Trajectory correct technology on range and direction" belongs to intelligent detecting technology and intelligent controlling technology.

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