Warning: file_put_contents(/www/wwwroot/ppbbu/80125.cn/cache/a0142fec84148b92939b42c86f8b39b7.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/80125.cn/index.php on line 58 double swing door例句_double swing door英汉例句_double swing door双解例句_食材铺反向词典
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。