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Jyutping din6 maa5
Pinyin diàn mǎ

Definitions (粵典–words.hk)
  1. 名詞
    電報​所用​嘅​特​別​符​號
    commercial code
Definitions (Wiktionary)
  1. noun
    telegraph code
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (Wiktionary)
  1. Mandarin
    电码
    電碼
    diàn mǎ
    • Chinese telegraph code