polybasic carboxylic acid

例句：

1. 1.This polybasic carboxylic acid is used in the production of plastics.
   这种多基酸用于生产塑料。
2. 2. Polybasic carboxylic acid can be used as a solvent for various organic compounds.
   多基酸可以用作各种有机化合物的溶剂。
3. 3. The polybasic carboxylic acid was found to have excellent antibacterial properties.
   研究发现，这种多基酸具有极好的抗菌性质。