steam jacket

Noun

A hollow casing surrounding any vessel and into which steam may be admitted.

Japanese Meaning

容器を囲む、中空構造の覆い部分で、内部に蒸気を供給して加熱等に利用するもの

The large mixing kettle's steam jacket ensured the sauce stayed at a constant temperature during cooking.

大型の攪拌釜に装着された蒸気ジャケットは、調理中にソースを一定の温度に保った。

Sense（1）

A hollow casing surrounding any vessel and into which steam may be admitted.

steam jackets

（ plural ）