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gunˊ²管douˍ₆道
Pinyin
guan3 dao4
Translations
noun
pipeline, piping, tubing, conduit
tungˉ¹通fungˉ¹風gunˊ²管douˍ₆道
(通风管道)
Pinyin
tong1 feng1 guan3 dao4
Translations
noun
ventilation duct
gunˊ²管douˍ₆道wanˍ₆運syuˉ¹輸
(管道运输)
Pinyin
guan3 dao4 yun4 shu1
Translations
noun
pipeline transport