castle circular nut 六角圆顶螺母 ; 六角圆螺母
circular nut with lock groove 带锁紧槽圆螺母
slotted circular nut 槽顶圆螺母
circular r nut 圆形螺母
The experimental results show that the technology of nut circular projection welding is superior to that of arc welding.
试验结果表明，螺母环形凸焊工艺优于电弧焊工艺。
The clamper has a fixed circular cylinder working horizontally, and a nut hole formed on the surface opposite to that arranged with the fixed circular cylinder.
夹具具有水平工作的固定圆筒，并在设置有固定圆筒的相反面形成有螺母孔。
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