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词汇 position-light signalling
释义

Definition of position-light signalling in English:

position-light signalling

(US position-light signaling)
noun
Railways
  • A system of signalling using position light signals.

Origin

Early 20th century; earliest use found in Electric Railway Journal.

Definition of position-light signalling in US English:

position-light signalling

(US position-light signaling)
noun
Railways
  • A system of signalling using position light signals.

Origin

Early 20th century; earliest use found in Electric Railway Journal.

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