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照仪表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，或经由另一个航空或独立的外部或可动力源的协助，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.

人类动力飞行—一种重航空，使用飞行上一人或多人的肌肉能量起飞和保持悬空。