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spiral spring
archit. 发条
auto. 涡卷弹簧
exhib. 蜗形弹簧
mech.eng. 蜷〔盘〕簧
met. 盘簧; 卷簧; 螺旋弹簧
tech. 螺旋形弹簧
spiral spring: 20 phrases in 6 subjects
Agriculture1
Automobiles6
Metallurgy3
Polygraphy1
Rail transport1
Technology8