lighter-than-air

汉语翻译

a. 轻于空气的

英语解释：

形容词 lighter-than-air:

1. relating to a balloon or other aircraft that flies because it weighs less than the air it displaces

详细解释：

light.er-than-air

adj.（形容词）
Having a weight less than that of the air displaced. Used of certain aircraft.
轻于空气的：重量比周围的空气轻。用于某种航空器