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进口商品的产地标记
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进口商品的产地标记
mark of origin
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double-concave
double-concave lens
double condenser
double conductor
double cone
double-cone gasket
double-cone loudspeaker
double-cone seal ring
double conical rotary vessel
double conical rotary vessel with jacket
double-conical saw
double connection
double-contact
double-contact key
double continuous curve
double contraction
double contraction pattern
double contrast cystography
double contrast radiography of colon
double contrast study of stomach
double control
double control switch
double conversion system
double converter
double convex
科学参考收录了1248194条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
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