GB/T16842-2016试具B触及试指 2024奥门中特钢49049

p1Src=//y1.yzimgs.com/uploads/312390/2024123-16657302.jpg?watermark/2/text/5rex5Zyz5biC5Yib6ZGr5Luq5Zmo5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/750/fill/I0E3QTlBOA==/gravity/Center