single face mechanical sealing

例句：

1. 1.The new machine uses a single-faced mechanical seal to reduce noise and improve efficiency.
   这台新机器使用单面机械密封来减少噪音并提高效率。
2. 2.The engineer designed the single-faced mechanical seal to ensure a smooth flow of material.
   工程师设计了单面机械密封，以确保材料流畅流动。
3. 3. The single-faced mechanical seal is an essential component in many industrial applications.
   单面机械密封是许多工业应用中必不可少的组件。