Warning: file_put_contents(/www/wwwroot/ppbbu/52065.com/cache/a1f4d278069cba2a5bad4e1b35e8bea5.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/52065.com/index.php on line 55 approximation in geometric optics是什么意思，approximation in geometric optics的翻译，approximation in geometric optics音标、读音、用法和例句_伍贰汉英词典