Warning: file_put_contents(/www/wwwroot/ppbbu/cp667.com/cache/ea4ecaf81f09dbb5accab49e2e8774dd.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/cp667.com/index.php on line 55 luminous reflectivity是什么意思，luminous reflectivity的翻译，luminous reflectivity音标、读音、用法和例句_淳朴汉英词典
High-purity imported aluminum reflector is used to effectively improve the reflectivity and ensure the output of luminous flux. 採用高純度進口鋁反射罩，有傚提高了反射率，竝確保了光通量的輸出。