发布时间:2025-01-31 17:45:35
100厘米起2厘米坡的意思。
1、2%的坡度说的就是100:2,路面横断方向的坡度。
是为了便于排水而设置的,用来表示在排水路径上每单位水平距离内垂直距离的大小。
如何做防滑坐垫自己做的沙发坐垫总往下滑不知道怎么办谁能帮我想点办法谢谢
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