1)diazo copier, diazo copying machine,diazo duplicator,diazo type copying machine, diazo-type machine,重氮复印机2)ammonia process diazo copying machine,干式重氮复印机<复>3)thermal process diazo copying machine,感热式重氮复印机<复>4)pressure development process diazo copying machine,加压式重氮复印机<复>5)pressure development process diazo copying machine,压力显影重氮复印机<复>6)diazotization,重氮