Two double head anti symmetric airfoils have been proposed and the wind tunnel tests on their lift and drag performances have been carried out.

 
  • 本文分析了双头车床控制系统的特点,提出了基于单片机构成的嵌入式控制方案,采用步进电动机实现对刀具的拖动定位,简化了控制系统结构。
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