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to phrases
opening ratio
nautic., tech. 开孔比值
oil 打开比; 开井比
railw. 孔径率
securit. 开盘比率
tech. 刀盘开口率
opening ratio: 18 phrases in 7 subjects
Economy3
International trade2
Oil / petroleum3
Refrigeration1
Technology7
Textile industry1
Wind Energy1