german gasrostofen (gas roasting or calcining furnace) primarily referred to a specialized, state-of-the-art industrial metallurgical furnace used for roasting iron ores—specifically designed by engineers like per axel westman, vintage illustration 19th - 重工業 幅插畫檔、美工圖案、卡通及圖標
business men command the tower crane to lift chinese containers and japanese containers - 重工業 幅插畫檔、美工圖案、卡通及圖標
furnace mouth at the barrow iron works in england — amid towering furnaces, pipes, and scattered timber, the few workers seem almost dwarfed, and that is what makes the force of industry so visible - 重工業 幅插畫檔、美工圖案、卡通及圖標
alfred krupp (german industrialist, 1812-1887), wood engraving, published in 1869 - 重工業 幅插畫檔、美工圖案、卡通及圖標
ironworks interior with workers forging a large metal wheel — laborers hammer and handle heavy machinery beside a furnace and towering industrial equipment - 重工業 幅插畫檔、美工圖案、卡通及圖標
