hermetic pressure-feed type centrifuge

例句：

1. 1. The hermetic seal on the jar prevents air from escaping.
   这个瓶子上的密封阻止了空气的泄漏。
2. 2. The hermetic seal is essential for preserving the contents of the container.
   这种密封对于保持容器内容物至关重要。
3. 3. Hermetically sealed containers are often used in scientific experiments to maintain a controlled environment.
   在科学实验中，密封的容器常被用来维持一个受控的环境。