thin film diamond

例句：

1. 1. The thin filmdiamond coating on the surface of the newcar is incredibly smooth and shiny.
   新车表面的薄膜钻石涂层非常光滑闪亮。
2. 2. Thin filmdiamonds have been used in cutting toolsto improve their efficiency and durability.
   薄膜钻石被用于切割工具中，以提高其效率和耐用性。
3. 3.The thin film diamond technology hasmade it possible to manufacture high-quality diamond jewelry at alower cost.
   薄膜钻石技术使得制造高品质钻石珠宝的成本更低成为可能。