departure n. 1.起程,出发;(火车的)开行。 2.背离,违反 (from);偏差。 3.【测】东西距离,横距。 4.〔古语〕逝世。 5.【航海】航迹推算起点。 departure and arrival 开出和到达。 departure from the truth 失真,伪。 new departure 新政策,新方案。 take one's departure 出发,起身。
Standard instrument departure (SID) routes, also known as departure procedures (DP) are published flight procedures followed by aircraft on an IFR flight plan immediately after takeoff from an airport.