bottom guard meaning in English

下部防护罩
下卫板

The screen - space coordinate of the bottom guard band clipping region
底部保护带剪辑区域的屏幕空间坐标。
The screen - space coordinate of the bottom guard - band clipping region
底部保护带剪辑区域的屏幕空间坐标。
The bottom guard band clipping region is the region outside of the viewport range in which the device can accept screen coordinates ; because the device can accept triangles that are partially or totally off - screen and within the guard band clipping region , the frequency of cpu - intensive clipping calculations can be reduced
底部保护带剪辑区域是视区范围外的一个区域，在此区域设备可接受屏幕坐标；因为设备可以接受部分离屏或全部离屏但处于保护带剪辑区域的三角形，所以，可以减少大量占用cpu的剪辑计算的发生频率。