hexagon socket countersunk head bolt的意思|示意
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六角承窝平顶埋头螺栓
hexagon socket countersunk head bolt的网络常见释义
六角承窝平顶埋头螺栓 Hexagon socket head shoulder screws 内六角圆柱头轴肩螺钉 hexagon socket countersunk head bolt 六角承窝平顶埋头螺栓 Hexagon socket head cap screws 内六角圆柱头螺钉 ..