发布时间:2025-02-04 04:27:55
4孔。经查询M15-4锚具M代表锚具(锚具汉语拼音第一个字母);15代表钢绞线的规格为15的钢绞线,4是指孔。锚具是指预应力混凝土中所用的永久性锚固装置,是在后张法结构或构件中,为保持预应力筋的拉力并将其传递到混凝土内部的锚固工具。
白衣服放在柜子或叠起来不经常穿为什么会有黄点怎么去除黄点和预防黄点谢谢
2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55请问为什么901胶水兑白水泥好用但一兑黑水泥在墙上就变得粗糙起卷呢
2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55 2025-02-04 04:27:55