hexagon head bolts with large head 中文意思是什麼
hexagon head bolts with large head
解釋
大六角頭螺栓-
Specifications of high strength bolts with large hexagon head, large hexagon nuts, plain washers for steel structures
鋼結構用高強度大六角頭螺栓大六角螺母墊圈技術條件 -
Specifications of high strength bolts with large hexa - gon head, large hexagon nuts, plain washers for steel structures
鋼結構用高強度大六角頭螺拴大六角螺母墊圈技術條件
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