| 单词 | course indicator | 
| 释义 | > as lemmascourse indicator   course indicator  n. an instrument or device for determining the course of a vessel, an aircraft, etc.In quot. 1869   apparently an index of the planned course. ΘΚΠ society > travel > travel by water > vessel, ship, or boat > equipment of vessel > navigational aids > 			[noun]		 > other instruments indicating course or leeway derivometer1842 dromoscope1875 course-indicator1900 1869    Jrnl. Royal United Service Inst. 12 69  				The idea of the course-indicator is to prevent mistakes in the courses given, so that the helmsman may have as it were, a fixed index pointing out to him the course ordered. 1900    Westm. Gaz. 14 Feb. 10/2  				An absolutely correct magnetic course indicator. 1991    Instrument Flying 2 July 43/2  				Appearance of the course warning flag indicates that the course indicator is not receiving a signal strong enough for reliable navigation information. < as lemmas  | 
	
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