Warning: file_put_contents(): Only 0 of 6528 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/201990.com/index.php on line 55 double swing door是什么意思，double swing door的翻译，double swing door音标、读音、用法和例句_耀久九英英词典
The original seal structure and the improved seal structure of the double-leaf swing door at the outside end are described. 介绍了外端双扇摆门的原密封结构和改进后的密封结构，对比分析了硅橡胶条、尼龙毛刷和羊毛毛刷的密封性能。