A longitudinal member or assembly of members running the length of a rigid or semi-rigid airship at the bottom of the envelope.
| 单词 | θ207992 |
| 释义 | society > travel > air or space travel > a means of conveyance through the air > balloons and airships > [noun] > longitudinal member (2) keel1888 A longitudinal member or assembly of members running the length of a rigid or semi-rigid airship at the bottom of the envelope. longitudinal1908 Aeronautics. A longeron, esp. one in an airship. |
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