主键盘 meaning in Chinese

master keyboard

This topic describes the main keyboard and mouse events provided by
提供的主键盘和鼠标事件。
A supplementary set of keys , usually numerical and arranged like a calculator , added to a keyboard
一组增设的键盘，通常是数字型的，其排列方式与计算器的排列方式相似，附设在主键盘上。
From the point of view of plane layout , keystroke match of the central section , edit & localization section and number aided section , the color design , the keyboard was improved pleasurably
从键盘的平面布局、主键盘区、编辑与定位键盘区和数字辅助键盘区的按键搭配、定位键、色彩以及整体设计等角度，对键盘进行了改进和完善。