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单词 block system
释义

block system

noun
A system of railway signalling which divides the track into sections and allows no train to enter a section that is not completely clear.He describes the first electrical equipment as well as the progressive adoption of electro-semaphore signalling and the organisation of the block system....
  • Electricity was also used by the block system of signalling, to keep trains apart.
  • The most used sections now use a variation of the moving block system, which means traffic is defined by trains, not by blocks, so trains can be closer and run more often.
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更新时间:2025/2/23 0:34:41