发布时间:2025-01-29 19:58:48
确实是有两种的,这里不得不说下,国标和美标的问题了。DN100是指的公称直径,是为了管道工程设计时,方便和管件连接,所以通用的一个叫法就是DN,DN100对应的国标就是108;对应的美标就是114.最好你对一下你的管子是外径是多大的,管件就不易买错了。
实木门跟实木复合门有什么区别,门的两面是复合板的它属于实木门吗
2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48请大家推荐一家清除室内污染的环保公司要成都的我家刚装修完屋里的味道太大了住不得人
2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48房子的隔音刚开始住进去隔音很好慢慢变得隔音不好邻居声音听的很清楚大家有这种情况吗隔音变差了
2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48 2025-01-29 19:58:48