美国+GF+多参数(PH/电导率/流量变送器)3-9900-1 3-9900-1p，3-9900-3，3-9900-3p，3-9900-2，3-9900-2p 图片

p1Src=//y2.yzimgs.com/uploads_old/319759/2014091111354096_old.jpg&p2Src=//y2.yzimgs.com/uploads_old/319759/2014091111354096_old_1.jpg&p3Src=//y2.yzimgs.com/uploads_old/319759/2014091111354096_old_2.jpg"