polymethacrylate gel

例句：

1. 1. This polymethacrylate gel is used to seal cracks in concrete.
   这种聚甲基丙烯酸凝胶用于密封混凝土中的裂缝。
2. 2. The gel-based paint has a smooth texture and is easy to clean.
   这种基于凝胶的油漆具有光滑的质地，易于清洁。
3. 3. The gel was used as a binding agent in the construction of the bridge.
   这种凝胶被用作桥梁建设的粘合剂。