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单词 field telegraph
释义

field telegraph

noun historical
A movable telegraph for use on campaign.The British would, soon after, organize their first field telegraph trains in the Royal Engineers....
  • Signal stations were difficult to establish and much less effective in bad weather or at night - when torches were used instead of flags - but they were easier to lay out than field telegraph wire.
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更新时间:2025/1/11 5:38:49