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Jyutping zing3 jin4 bo1
Pinyin zhèng xián bō

Definitions (CC-CEDICT)
  1. sine wave
  2. simple harmonic vibration
Definitions (Wiktionary)
  1. noun
    sine wave; sinusoid
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)