用象限I中的角来表示所有象限中的角的函数。
Functions of angles in all quadrants in terms of those in quadrant I.
四象限雪崩探测器的角分辨力直接影响跟踪系统的跟踪精度。
The tracking precision of laser tracking system is affected by the angular resolution of quadrant avalanche photodiode .
象限角