n.复制，重复
v.[遗传学]重复，被复制，复制( duplicate的现在分词 ); 复印; 使成双

duplicating paper → 复印纸；复写纸；双层纸；洋贡川纸
duplicating machine → 复写器；仿型机床；复写机
duplicating program → 复制程序
duplicating tissue → 复印薄纸；复写薄纸
duplicating system → 磁带复制装置
duplicating model → 复制模型
stencil duplicating → 誊写版印刷；钞缮版印刷
duplicating puncher → 复穿孔机
duplicating punch → 复制穿孔