microscopic view of various urate crystalluria (crystals) in human urine - 19th century - 鈉 幅插畫檔、美工圖案、卡通及圖標放大, 痛風
illustration of downs process, showing the industrial-scale extraction of sodium metal achieved by electrolysis of molten sodium chloride - 鈉 幅插畫檔、美工圖案、卡通及圖標
sir humphry davy, (17 december 1778 – 29 may 1829) was a cornish chemist and inventor who invented the davy lamp and a very early form of arc lamp - 鈉 幅插畫檔、美工圖案、卡通及圖標