基本解释瞳孔距离英汉例句双语例句Objective To investigate difference of metric ruler, videorefactor and pupillometer in measuring pupillary distance (PD).目的比较米制直尺、电脑验光机与瞳距仪测量双眼瞳距的差异。pupillary distance更多例句词组短语短语pupillary distance meter 瞳距计pupillary distance scope 瞳距镜pupillary distance更多词组