English Dictionary

aerostat

noun

An aircraft, such as a dirigible or balloon, that derives its lift from buoyancy rather than from wings or rotors.

The aerostat floated gracefully in the sky.

意味（1）

An aircraft, such as a dirigible or balloon, that derives its lift from buoyancy rather than from wings or rotors.

With its molten temperatures, sulphuric acid clouds, and crushing carbon dioxide atmosphere, Venus has only a handful of aerostat research outposts.

意味（2）

A moored balloon flown in a semi-permanent manner, such as a border patrol monitoring balloon affixed at 18,000 feet (~6 km).