Gusset
01
三角衬, 加固片
a triangular or diamond-shaped piece of fabric that is inserted into a garment to add extra room or reinforcement
02
加强板, 加固金属板
a metal plate used to strengthen a joist
03
覆盖装甲板未保护部位的链甲片, 护腋
a piece of chain mail covering a place unprotected by armor plate



























