Warning: file_put_contents(): Only 0 of 4964 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 wave of infinitely small amplitude是什么意思，wave of infinitely small amplitude的翻译，wave of infinitely small amplitude音标、读音、用法和例句_沉淀汉英词典