close-up of two university students adjusting and holding scientific equipment in a laboratory - 鐵支架 個照片及圖片檔
flask with liquid set over burner, front view, toned image, blue background, differential focus - 鐵支架 個照片及圖片檔
female scientist dropping liquids into a petri dish with pipette, front view, differential focus - 鐵支架 個照片及圖片檔科學家
female scientist dropping liquids into a test tube with pipette, rear view, differential focus - 鐵支架 個照片及圖片檔
female scientist dropping liquids into a petri dish with pipette, side view, differential focus - 鐵支架 個照片及圖片檔
female scientist dropping liquids into a petri dish with pipette, side view, differential focus - 鐵支架 個照片及圖片檔科學家
three scientists working at the desk, woman holding mortar and pestle, side view, differential focus - 鐵支架 個照片及圖片檔
Eccentric junk and curio collector Bruce Lacey at his home in Muswell Hill, London. Bruce, nicknamed the 'Mad Professor' also produces props for...一個人, 幽默, 複雜性
ideal clamping tools for metalworking. male african american worker adjusting clamp for grinding or welding process a metal part on a metal workbench. - 鐵支架 個照片及圖片檔