发布时间:2025-01-21 06:37:45
y有可能是室外雨水管。
d600是管径
0.002是坡度,千分之二
30是长度,30米。
管材不一定非要是砼管,这些个参数没表示材质。
旧房子搞装修如何把旧窗户和门从墙里拆下来我的意思是如何让墙受最小的损伤把旧窗户和门拆出来
2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45如图是家庭厨房中常见的水池示意图将水池的排水管道做成u形可以起到堵臭作用这是什么原因
2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45 2025-01-21 06:37:45现在男朋友忙着装修新屋没有时间理我对我越来越冷淡向他提出分手他又不答应可有一点安全感也没
2025-01-21 06:37:45