science, chemistry, distillation flask and cooling apparatus, laboratory glassware, vintage illustration, german text, 1875 19th century - 冷凝管 幅插畫檔、美工圖案、卡通及圖標復古風格, 維多利亞女王時代風格
chapel furnace and retort piston laboratory glassware, designed for distillation or dry distillation, vintage illustration, german text, 1875 - 冷凝管 幅插畫檔、美工圖案、卡通及圖標
antique illustration, physics principles and experiments, electricity and magnetism: electric capacitor - 冷凝管 幅插畫檔、美工圖案、卡通及圖標