Sketch for the school in rue Chateau-Landon, 10th arrondissement of Paris, 1881. Artist Jules Didier.
a female engineer works on a tablet computer at the construction site of a chemical plant - 冶金學 個照片及圖片檔核能發電廠, 計劃, 職業
a female engineer used a hardness tester to test steel inside the steel pipe - 冶金學 個照片及圖片檔檢查, 焊接, 檢查員
woman in hardhat and reflective clothing watching worker in protective anti-heat suit in foundry - 冶金學 個照片及圖片檔鋼鐵廠, 僅有女人
worker factory man concept. inspection technician, factory engineer, inspection of the machine condition in the factory. inspection by technicians, industrial business, production machinery - 冶金學 個照片及圖片檔團隊工作
View of Magnitogorsk Iron and Steel Works , which is a Russian metallurgical plant in the city of Magnitogorsk, Chelyabinsk region on October 20,...俄羅斯, 鋼鐵廠
View of Magnitogorsk Iron and Steel Works , which is a Russian metallurgical plant in the city of Magnitogorsk, Chelyabinsk region on October 20,...
Worker at CSN, Companhia Siderurgica Nacional - metallurgy of iron and steel - smelting iron, heavy iron and steel production.巴西, 鋼鐵廠, 職業
Working process at the Zaporizhstal steel plant, owned and operated by Metinvest, the largest private company of Ukraine, Zaporizhia, Ukraine, on...烏克蘭, 歐洲, 能源
