polyenic compounds

例句：

1. 1. Polyenic compounds are used in the production of plastics.
   多核化合物用于生产塑料。
2. 2. The polyenic structure of the protein is crucial for its function.
   蛋白质的多核结构对其功能至关重要。
3. 3. Polyenic materials are often more durable and resistant to wear and tear than their single-component counterparts.
   多核材料通常比它们的单一成分对应物更耐用，更能抵抗磨损。