飞机纵向运动方程的短周期和长周期的右半平面可能存在零极点对问题,这对飞机控制造成不利影响,直接利用定量反馈理论不能满足要求。
互联网摘选
AIRBUS, Europe's aircraft-making champion, has long had nose in the subsidy trough.
“空客”, 欧洲头号飞机制造商, 长久以来一直享受补贴行为.
互联网摘选
Civil aircraft engines must be quiet, non-polluting, reliable and long-lasting.
民用飞机的发动机必须静音、无污染、可靠、耐用。
词典精选例句
One fixation bolt of undercarriage support in aircraft fractured after servicing a long time.
某飞机起落架缓冲支柱固定螺栓长期使用后断裂.
网络文摘精选
