Terms for subject Polygraphy containing folding

English	Chinese
binding margin; inner margin; inside margin; folding margin; gutter margin	订口空白
binding with folding flap ; fan style	折叠式装订
cross fold; cross folding; broad fold; right angle fold; short fold	横折
direct line ; folding mark	折页线
folding diagram	折页尺寸
folding into signatures	折叠成书帖
folding margin	折页线外空白
inside margin ; folding margin	订口空白
longitudinal folding; long fold	纵向折叠
over and back; parallel fold; pull-out fold; spiral fold; zigzag folding; accordion fold; accordion pleat; concertina folding	折子式折页
right-angle fold; right-angle folding; cross fold; cross folding	直角折页