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词汇 ground speed
释义
ground speed
noun [ C usually singular ] engineering specialized uk/ˈɡraʊnd ˌspiːd/ us/ˈɡraʊnd ˌspiːd/
地速(指飞机飞行时相对于地面的水平速度)
An aircraft's ground speed is its speed when measured against the ground rather than the air through which it moves.
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