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to phrases
jockey roller
auto. 导向滚子; 导轮; 张紧轮
plast. 导辊; 张力辊
tech. 导〔辅,惰,支持〕轮; 皮带或链条的支持轮; 张紧辊
jockey roller: 3 phrases in 2 subjects
Automobiles1
Polygraphy2