block post

名词 n.
中文释义

英文释义

名词 n.
  1. In signalling, a signal box at one end of a block section.
    — There is a very small illuminated diagram, of comparatively recent installation, and this probably is unique in a four-lever block post. […] There are, of course, small block posts elsewhere that have no switch but they control special installations, such as level crossings.

词形变化

block posts plural
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