Warning: file_put_contents(/www/wwwroot/ppbbbu/n94.cn/cache/6ce209c14c5751e6e908f8dc9fb51af0.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/n94.cn/index.php on line 55 toroidal field winding是什么意思，toroidal field winding的翻译，toroidal field winding音标、读音、用法和例句_94生活常识网有道词典