备用机场 alternate aerodrome
- 请准备好备用机场。
Please have a alternate airfield ready. - 备用机场,当不可能或不适宜在预选机场着陆时,可作着陆使用的场机。
ALTERNATE aerodrome, an aerodrome to which an aircraft may proceed when it becomes either impossible or inadvisable to proceed to or land at the aerodrome of intended landing.
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