微机型酸度计 型号：PHS-3C PHS-3C 北京同德创业科技有限公司

p1Src=//y2.yzimgs.com/uploads/378650/2016118-13531467.jpg&p2Src=//y1.yzimgs.com/uploads/378650/2016118-135310151.jpg&p3Src=//y3.yzimgs.com/uploads/378650/2016118-135316333.jpg