birkeland current是什么意思，birkeland current的翻译，birkeland current音标、读音、用法和例句

Warning: file_put_contents(): Only 0 of 4838 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/5256789.com/index.php on line 55
birkeland current是什么意思，birkeland current的翻译，birkeland current音标、读音、用法和例句_绿查网谷歌词典