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| 优先航线 (适合航路交通管制中心 (ARTCC)计算机的优先航线,包括优先离场航线 (PDR),优先进近航线 (PAR),优先离场和进近航线 (PDAR ),完成机构内部和机构之间空管员的协调，并确保在合适的管制位置告知飞行数据，需要这些特定的进场和离场航线的位置，一般会在当地空管机构通报空管员中公布。飞行员使用它们会减少飞行计划航线的改正。当工作负荷或交通情况允许时，空管员通常会提供雷达导引或指派请求的航线，来减少迂回航线) | |||
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| 优先进路 | |||
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preferential routes : 4 phrases in 1 subject |
| Aviation | 4 |
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