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预留高度层; 高空预留区 (在管制空域中特别划出的一块空域范围,作为特殊时期民用或军用航空的紧急使用预留区。通常是作为大批飞机飞行通过的空域,当然也可以用于其他任何目的的行动。高空预留区可以是被限定在一个固定区域“场站”周围的固定空域,也可以是随飞机行动的活动区域) | |||
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An airspace of defined dimensions within controlled airspace, reserved for the use of a civil or military agency during a specified period. An altitude reservation may be confined to a fixed area stationary or moving in relation to the aircraft that operate within it moving. |
altitude reservation : 4 phrases in 2 subjects |
Aviation | 3 |
Electronics | 1 |