Aeronautics. Designating a balloon, airship, or other flying craft whose weight is less than the weight of the air which it displaces and which can…
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| 释义 | society > travel > air or space travel > a means of conveyance through the air > [adjective] > lighter or heavier than air (2) lighter-than-air1901 Aeronautics. Designating a balloon, airship, or other flying craft whose weight is less than the weight of the air which it displaces and which can… heavier-than-air1903 Designating a flying-machine whose weight is greater than the weight of the air which it displaces, and whose lift is not dependent on light… |
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