[---线]

Jyutping zing3 jin4 kuk1 sin3
Pinyin zhèng xián qū xiàn

Definitions (CC-CANTO)
  1. sinusoid / sine wave
Definitions (Wiktionary)
  1. noun
    sinusoid; sine wave
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)