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辊环 gǔnhuán
met. roll collar; roll ring
roll. collar
tech. collars
【压】 辊环 gǔnhuán
met. collar; roll collar; roll ring
辊环〔脊〕 gǔnhuán
gen. roll-collar
辊 环
: 47 phrases in 5 subjects
Metallurgy27
Plastics1
Technology17
Textile industry1
Water resources1