主表面 meaning in Chinese

first type surface
primary surface

Using overlay to save data and display on condition that the display adapter supports it . otherwise , using off - screen to save data and using bit to transfer data to the primary surface . bring forward the method of block moving or line moving to transfer data from pc memory to video memory
在硬件支持覆盖图并满足应用需求的情况下，使用覆盖图进行图像数据存储和显示；上述条件不满足时，使用离屏表面作为图像存储区，并使用位块传送方法bit传递离屏表面数据到主表面以完成图像的显示。