bessemer converter (vorderansicht) used for the smelting and refinement of copper matte (kupferstein).the tilting furnace vessel, the air blast piping system, and the heavy mechanical gear assembly used in late victorian industrial metallurgy. - 硫酸鈷 幅插畫檔、美工圖案、卡通及圖標
bessemer converter (vorderansicht) used for the smelting and refinement of copper matte (kupferstein).the tilting furnace vessel, the air blast piping system, and the heavy mechanical gear assembly used in late victorian industrial metallurgy. - 硫酸鈷 幅插畫檔、美工圖案、卡通及圖標
gerstenhöfer furnace, a significant 19th-century invention that revolutionized the roasting of fine-grained ores. - 硫酸鈷 幅插畫檔、美工圖案、卡通及圖標
сide view (longitudinal section) of the gibb & gelstharpe rotating circular furnace (tellerofen) - 硫酸鈷 幅插畫檔、美工圖案、卡通及圖標
specialized metallurgical structure known as a small refining hearth (kleiner garherd), a key component in 19th-century metal purification. - 硫酸鈷 幅插畫檔、美工圖案、卡通及圖標
smelting furnace ,documenting the complex spatial organization required for 19th-century metallurgical operations. - 硫酸鈷 幅插畫檔、美工圖案、卡通及圖標
mansfeld furnace with continuous slag discharge ,technical plan (cross-section) of a mansfeld copper smelting furnace - 硫酸鈷 幅插畫檔、美工圖案、卡通及圖標
mansfeld furnace with continuous slag discharge ,technical plan (cross-section) of a mansfeld copper smelting furnace - 硫酸鈷 幅插畫檔、美工圖案、卡通及圖標
sulfate free - handwritten text, highlighted, crossed out, underlined on blank background - 硫酸鈷 幅插畫檔、美工圖案、卡通及圖標
minerals and their crystalline forms engraving antique illustration, published 1851 - 硫酸鈷 幅插畫檔、美工圖案、卡通及圖標雕刻圖像, 礦物質, 石英
