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Jyutping lyun4 zuk6 hei3
Pinyin lián zhóu qì

Definitions (Wiktionary)
  1. noun
    coupling (device)

聯軸器 [联轴-]

Jyutping
Pinyin lián zhòu qì

Definitions (CC-CEDICT)
  1. (mechanics) coupler; coupling