视角因数viewfinder: 反光镜; 观景窗; 观景器; 检像器; 取录器; 取影器; 寻像器,取景器viewership: 收视率viewfinder camera: 平视取景式照像机viewer-editor: 看片编辑机viewfinder contrast: 寻象对比度下载手机词典可随时随地查词查翻译