操作面板主要包括: 液晶显示 、 设置键区和测试键区.Operation panel include: LCD, set up key areas and key testing area.而且, 还提供了包括该光导板的键区组件以及光导板构造的两种应用.Further, a keypad assembly including the lightguide and two uses of lightguide constructions ...

“键区”的英语可以翻译为：[计] keyfield，keypad，[化] bonding region ...