foamed materials的用法和样例：
例句
- The starch foam materials with different glycerol contents were extruded by using a twin-screw extruder.
摘要利用双螺杆挤出机制备了甘油含量不同的淀粉泡沫材料。 - Foamed plastic materials containing many small cells which are not connected are good cryogenic insulating materials.
塑料泡沫材料含有许多互不相通的小气囊，是优良的低温绝缘材料。
