Warning: file_put_contents(): Only 0 of 6075 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 bi-directional tension control是什么意思，bi-directional tension control的翻译，bi-directional tension control音标、读音、用法和例句_沉淀汉英词典