plain nut 中文意思是什麼
plain nut
解釋
平螺帽-
Sets of torshear type high strength bolt hexagon nut and plain washer for steel structures
鋼結構用扭剪型高強度螺栓連接副 -
Technical requirement for sets of torshear type high strength bolt hexagon nut and plain washer for steel structures
鋼結構用扭剪型高強度螺栓連接副技術條件 -
Sets of high strength hexagon bolt, hexagon nut and plain washers for friction grip joints
摩擦夾緊連接用高強度六角螺栓六角螺母及平墊圈系列
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