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black box

Word family
Related topics: Air, Measurement
ˌblack ˈbox noun [countableC] informal  
TTATMa piece of equipment on an aircraft that records what happens on a flight and can be used to discover the cause of accidents 〔飞机上的〕黑匣子,飞行记录器 SYN flight recorder
Examples from the Corpus
From Longman Business Dictionary
black boxˌblack ˈbox noun [countableC] informal
1an electronic unit that records information on an aircraft about its height, speed etc. If the plane crashes, the black box can be examined to find the causes
Data from the black box recovered from the destroyed helicopter has been played back satisfactorily.
2a machine that works in a secret way that is not normally explained to people
We found out what formulas were inside the black boxes that firms used to determine when to set off computer-driven program trades.
ˌblack ˈbox noun
Chinese
Syllable
Corpus

See also: black box

black box
Parts of aircraft: aerofoil, aft, aileron...
General words for machinery and equipment: apparatus, armamentarium, array...

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