smokestack industry
noun [ C ] mainly US uk/ˈsməʊk.stæk ˌɪn.də.stri/ us/ˈsmoʊk.stæk ˌɪn.də.stri/
烟囱工业，（传统的污染严重的）重工业
a traditional industry that produces large machines or materials used in other industries and creates pollution in doing so
There's been a steady decline in smokestack industries such as shipbuilding and steel. 造船和钢铁等重污染工业正在稳步减少。