An MDA is the lowest permissible height (in a nonprecision approach) at which an aircraft can be controlled by reference only to instrument information.

最低下降高度是在仅参信息就能操纵航空时的最低允许高度(在非精密进近中)。

That part of a flight, in which the paraglider is not towed, carried or assisted by another aircraft or separate external or jettisonable power source.

飞行伞没有被拖曳，运载或经由另个航空或独立的外部或可抛弃式动力源的协助，所作的飞行部分。

9 Class I : HUMAN-POWERED AIRCRAFT -An aerodyne which takes off and remains airborne using solely the muscular energy of one or more persons on board.

类动力飞行—种重航空，使用飞行或多的肌肉能量起飞和保持悬空。