| 单词 | initial great-circle course | 
| 释义 | initial great-circle course [i`nish·ǝl `grāt ´sǝr·kǝl ´kȯrs]  NAVIGATION The direction, at the point of departure, of the great circle through that point and the destination, expressed as the angular distance from a reference direction, usually north, to that part of the great circle extending toward the destination. Also known as initial great-circle direction.  | 
	
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