A-stage phenol-formaldehyde resin

例句：

1. 1.The adhesive is made from A-stage phenol-formaldehyde resin, which has excellent bonding strength and durability.
   这种粘合剂是由A-阶段酚醛树脂制成的，具有极佳的粘接强度和耐久性。
2. 2.During the construction process, the adhesive was used to bond the wooden beams together, ensuring their stability during the installation.
   在施工过程中，使用该粘合剂将木梁连接在一起，确保安装过程中的稳定性。
3. 3. The use of A-stage phenol-formaldehyde resin in the construction industry has greatly improved the efficiency and quality of building projects.
   在建筑行业中，使用A-阶段酚醛树脂大大提高了建筑项目的效率和质量。