《英汉医学词典》object film distance 物体-胶片距离 object-film distance: 被检体; 物体object-to-film distance: 工件至胶片距离distance to object: 至目标的距离object distance: 目标距离; 物距distance to the horizon from object: 物标水平视距下载手机词典可随时随地查词查翻译