Abstract: Split drag rudders(SDR) with flying wing aircraft are innovative control surfaces.
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The high-aspect-ratio flying wing eliminates vertical tail and conventional rudder, and uses instead a split drag rudder with large deflection as its directional control surface.
大展弦比飞翼布局飞机取消了垂尾和常规方向舵，通常采用大偏角的开裂式方向舵作为偏航操纵面。
Meanwhile a newly restored dividend — albeit a measly one penny per share — and a ten-for-one reverse stock split could drag its shares out of the single digits.
新恢复了分红——虽然每股只有1美分——它的十合一的合股使它从低股价中走了出来。
In 1998, it produced DC motor to drag piston compressor split type electric air conditioning system, solved the adaptability problem in complex trolleybus 's power supply system.
1998年，生产出直流电机拖动活塞式压缩机的分体式电车空调系统，成功解决了空调在复杂的乌龟电车点系统中的适应性问题。
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