1. 三個二進制位或三個脈沖組成的一種組，通常按時間順序出現(xiàn)在一根導線上或同時出現(xiàn)在三根導線上。
   A group of three bits or three pulses, usually in sequence on one wire or simultaneously on three wires.
2. 一種能傳輸信號的信道或導線。
   A channel or conductor capable of transmitting signals.
3. 由兩根外皮絕緣的導線扭在一起組成的一種類型的傳輸媒體，扭在一起是為提高對可能破壞被傳輸信號的其它（雜散）電信號的抗擾度。
   A type of transmission medium consisting of two insulated wire twisted together to improve its immunity to interference from other(stray) electrical signals that may otherwise corrupt the signal being transmitted.
4. 單線的僅有或用一根絲，例如纖維或導線
   Having or using only one filament, such as a thread or wire.

導的英語翻譯：

線的英語翻譯：