发布时间:2025-01-17 00:17:15
砖头里有很多碳酸钙么,,,,加点盐酸。。别太多。。适量就可以。。。砖头就会变酥。。。拍一下就碎了
刚买的房子两个窗户中间一根柱子已经打掉了现在担心是承重柱请问那是承重墙嘛
2025-01-17 00:17:15 2025-01-17 00:17:15底滤式水族箱在鱼缸最底下的塑料板下面应该放一层过滤绵还是放沙子
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