Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/e36920e155ea1790014ad2bfd61077eb.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 effective f-number是什么意思,effective f-number的翻译,effective f-number音标、读音、用法和例句_沉淀汉英词典