实验采用单光路临界角法，用四象限探测器探测输出信号，物面微位移采用压电陶瓷作为驱动元件。
The experiment came into use single light path critical angle method, output signals were detected by four-quadrant receiver, micro-displacement drive element were piezoelectric ceramics.
实验结果表明，传统的四象限探测仪测角算法具有较大的误差。
It has been proved by experiment that the traditional Angle measurement algorithm of the detector with four quadrants is of big measurement error.
并讨论了圆弧分象限“均差”割线方式插补时，圆弧的起始步距角和终止步距角、起始象限步数和终止限步数；
The relation between the maximum radial error and arc radius and approach step-length in the secant mode of arc data interpolation in CNC system is detailed.
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.
方法取患眼健康象限或对侧眼浅层角膜或角结膜组织为供体，为16只瞳孔区角膜斑翳或因烧伤发生自溶性溃疡的角膜作自体眼表移植术。
Methods Ocular surface autografting was performed on 16 eyes with donor tissue either from healthy quadrants of the same eye or from the contralateral eye.
方法取患眼健康象限或对侧眼浅层角膜或角结膜组织为供体，为16只瞳孔区角膜斑翳或因烧伤发生自溶性溃疡的角膜作自体眼表移植术。
Methods Ocular surface autografting was performed on 16 eyes with donor tissue either from healthy quadrants of the same eye or from the contralateral eye.
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