Warning: file_put_contents(/www/wwwroot/ppbbbu/202081.com/cache/e04afe8552deaa77b91a8d107a57e834.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/202081.com/index.php on line 55 ventilating pipe例句_ventilating pipe英汉例句_ventilating pipe双解例句_2020年的事情英文词典
The invention provides a ventilating and air-discharging pipe with low cost, light body, thin wall, and easy-cutting and ideal ventilation effect. 本 发明提供一种成本低、体轻、壁薄、易于切割，且通风效果理想的通风排烟管 道。 ip.com