polyurethanes [pɒli:u:'reθænz]

例句:

• The aim was to research the sound absorption properties of graded polyurethanes at incident angles.
  主要研究梯度聚氨酯在全入射角下的吸声性能.
  
• Solid polyurethanes are similar to injection moulding materials, and more suited to thinner wall sections.
  固体聚氨酯类似注射成型材料, 更适合薄壁截面零件.
  
• Segmented polyurethanes amorphous or crystalline soft segments as reversible phase and phase can exhibIt'shape - memory properties.
  聚氨酯是一种具有微相分离本体结构的多嵌段共聚物,可通过调节原料的组成和配比,得到性能各异的新型功能高分子材料.
  
• The polymers can be used to manufacture polyurethanes and a range of other materials.
  来自SA