noun
factory district; industrial area
Refers to a zone or belt where factories are concentrated, often along a coast or river.
このあたりは昔から工場地帯として知られている。
This area has long been known as a factory district.
工業地帯 is a broader term for an industrial zone, while 工場地帯 specifically emphasizes the concentration of factories.
Compound of 工場 (factory) and 地帯 (zone, belt).