bismanal

例句：

1. 1. The bismanal structure of the material is responsible for its high strength and toughness.
   这种材料的双金属结构是其高强度和韧性的原因。
2. 2.The bismanal layer in the coating provides excellent corrosion resistance.
   涂层中的双金属层提供了极好的耐腐蚀性。
3. 3.The bismanal design of the car body ensures aerodynamic efficiency.
   汽车车身的双金属设计确保了空气动力学效率。