形容詞 nonrigid:

1. designating an airship having a shape maintained only by internal gas pressure and without a supporting structure

non.rig.id

adj.（形容詞）
Not rigid:
非剛性的：
例句：
a nonrigid frame.
一個非剛性的框架

Of, relating to, or being a lighter-than-air aircraft that holds its shape by gas pressure.
軟式飛艇的：屬于、關于或是由氣體壓力支撐其形狀的輕型飛艇的