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单词 θ208128
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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更新时间:2025/1/24 17:50:39