短语词组短语Round weld nuts 焊接圆螺母Insert round nuts 嵌装圆螺母Round nuts with washers 圆螺母用止动垫圈slotted round nuts 带槽圆螺母;圆螺母端面开槽;开槽圆螺母Round nuts with gaskets 圆螺母用止动垫片round nuts with set holes 圆螺母Round nuts with stopping collar 圆螺母用止动垫圈 返回 round nut