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| 最低航路高度 (可确保合格的导航信号覆盖范围，并能满足哪些定位点之间越障要求的无线电定位点之间的最低公布高度。最低航路高度适用于所有航路或其他直接航路的整个宽度) | |||
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| The altitude above sea level ASL between specified fixes on airways or air routes that assures acceptable navigational signal coverage and that meets the IFR obstacle clearance requirements | |||
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minimum en -route altitude : 3 phrases in 1 subject |
| Aviation | 3 |
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