acroid resin

例句：

1. 1.The acroid resin was used to strengthen the wooden structure.
   使用树脂来加固木结构。
2. 2.The acroid resin is highly resistant to water and can be used as a waterproofing agent.
   该树脂对水有很好的抵抗力，可以用作防水剂。
3. 3.Acidic acroid resin is commonly used in the production of paints and varnishes.
   酸性的树脂常用于油漆和清漆的生产。