特殊用法document copying1.文件复制electrostatic copying1.静电复印form copying1.仿形［靠模］加工法intensive copying1.机械摹仿［抄袭］longitudinal copying1.纵向仿形［靠模］transverse copying1.横向仿形［靠模］two-dimensional copying1.二座标仿形wet diazo copying1.湿法重氮复制