电导率电极（石墨四极） GD52-YSDD8 图片

p1Src=//y3.yzimgs.com/uploads/543318/202182-102945915.jpg?watermark/2/text/55SY5Li556eR5oqA5rKz5YyX5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/750/fill/I0E3QTlBOA==/gravity/Center"