液えき封ふう

noun

liquid seal; liquid ring

Technical term used in engineering contexts, such as pumps or sealing mechanisms, where a liquid forms a barrier or ring.

• 液えき封ふう式しき真しん空くうポンプは、液えき体たいを使つかって気き体たいを封ふうじ込こめる。

  A liquid-seal vacuum pump uses liquid to trap gas.