短语词组短语half -bright nut 半精致螺母;半精制螺帽semi -bright nut 半光制螺母semi bright nut 半光制螺母half bright nut 半精制螺帽Bright Mild Steel Hexagonal Nut 光亮软钢六角螺丝帽bright mild steel square nut 四方冲光螺丝帽 返回 bright nut