裂缝宽度观测仪 裂缝测宽仪 BX611-L-F10
北京百万电子科技中心
p1Src=//y3.yzimgs.com/uploads/367833/2018928-112925682.jpg?watermark/2/text/5YyX5Lqs55m-5LiH55S15a2Q56eR5oqA5Lit5b-D/font/5a6L5L2T/fontsize/650/fill/I0E3QTlBOA==/gravity/SouthEast