metalworking line icon set. group of object. steel, iron, aluminium, welding, forging, fabrication, industry. - 機械加工 幅插畫檔、美工圖案、卡通及圖標圖示, 線圖示, 研磨
dividing ores ,boys from the age of 14. by hand you separate the richer ores from the dead rock with which it breaks in the mine on the ore veins. - 機械加工 幅插畫檔、美工圖案、卡通及圖標兒童, 男孩, 工廠
women using grindstone at the mill, grinding corn, palestine, vintage photograph 19th century 1890s - 機械加工 幅插畫檔、美工圖案、卡通及圖標
an industrial disintegrator is a heavy-duty, high-speed machine that reduces, grinds, and pulverizes materials into small, uniform particles, vintage illustration, german text, 1875 - 機械加工 幅插畫檔、美工圖案、卡通及圖標
semolina purifier designed by the famous miller and inventor karl haggenmacher. this machine was the "secret weapon" of the 19th-century flour industry, allowing for the production of snow-white flour - 機械加工 幅插畫檔、美工圖案、卡通及圖標
technical cross-section diagram of a vertical roller mill. this machine represents the most significant invention in the history of flour milling, marking the transition from ancient millstones to modern industrial milling - 機械加工 幅插畫檔、美工圖案、卡通及圖標
milling machine with horizontal spindle — heavy woodworking machine by hirsch & co. in berlin with horizontal milling spindle, workpiece support and transmission drive - 機械加工 幅插畫檔、美工圖案、卡通及圖標
