《英汉医学词典》source object distance 焦点-物体距离 source-object distance: 焦点-物体距离source-to-object distance: 射线源至工件距离distance to object: 至目标的距离object distance: 目标距离; 物距source object: 来源物体; 始对象下载手机词典可随时随地查词查翻译