软式小型飞艇
... 软式小型飞艇 = blimp 软式小型飞艇 = blimps 软弱 = feckless ...
飞艇
I speak English well is relatively slow, please forgive me » 我发言是好英文相对缓慢,请原谅我 blimps » 飞艇 ..
A blimp, or non-rigid airship, is an airship without an internal structural framework or a keel. Unlike semi-rigid and rigid airships (e.g. Zeppelins), blimps rely on the pressure of the lifting gas (usually helium, rather than hydrogen) inside the envelope and the strength of the envelope itself to maintain its shape. The term is sometimes also used to refer to the tethered craft properly known as moored balloons. While often very similar in shape, moored balloons have no propulsion and are tethered to the ground.