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单词 colour light signal
释义

Definition of colour light signal in English:

colour light signal

(US color light signal)
noun
Railways
  • An electric fixed signal which gives instructions to the train driver by the colour of the light displayed, rather than by the position of the lights.

Origin

Early 20th century; earliest use found in Index to Signal Literature.

 
 

Definition of colour light signal in US English:

colour light signal

(US color light signal)
noun
Railways
  • An electric fixed signal which gives instructions to the train driver by the colour of the light displayed, rather than by the position of the lights.

Origin

Early 20th century; earliest use found in Index to Signal Literature.

 
 
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