constant sheaf的用法和樣例：
例句
- The strain layer is composed of a high dielectric constant material.
應變層是由一個高介電常數的材質所構成。 - Based on the properties of BARC and low dielectric constant, the process reliability of these materials can be ensured and the process competence can be promoted.
由於此抗反射材料本身是由低介電常數材料所構成，因此在微影製程中可省去再外加抗反層的步驟，並增加製程的可靠度及競爭性。
