• 홈
  • quadruplex telegraph

quadruplex telegraph

type of electrical telegraph

en-GB/kwɒdɹuːplɛks ˈtɛlɪɡɹɑːf/
en-US/ˈkwɑdɹʊˌplɛks ˈtɛləˌɡɹæf/

카테고리:

telegraph