交換技術 (gaau1 wun6 gei6 seot6) — switching technology in Cantonese
gaauˉ¹交wunˍ₆換geiˍ₆技seotˍ₆術简 交换技术
Mandarin Pinyin: jiao1 huan4 ji4 shu4
Meaning of 交換技術
nounswitching technology
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