| 释义 |
象限xiàngxiàn平面直角坐标系的横、纵坐标轴把平面分为四个部分,每一部分叫做一个象限。右上方为第一象限,按逆时针方向旋转,依次为第二、第三、第四象限。{quadrant; any of the four parts into which a plane is divided by rectangular coordinate axes lying on that plane, the upper right part being quadrant 1, and the others being, counterclockwise, quadrant 2, quadrant 3 and quadrant 4} |