recessed bolt 中文意思是什麼
recessed bolt
解釋
凹槽螺栓-
Cross recessed hexagon bolt with indention and plain washer assemblies
十字槽凹穴六角頭螺栓和平墊圈組合件 -
Cross recessed hexagon bolt with indentation and plain washer assemblies
十字槽凹穴六角頭螺栓和平墊圈組合件 -
Cross recessed hexagon bolt with indentation and single coil spring lock washer assemblies
十字槽凹穴六角頭螺栓和彈簧墊圈組合件
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