Pull out before you want to open on the back of the circular disk lock plate with hooks, nut spanner remove round nut, reoccupy special pull the son will disc pull out.
拉出前，先要开圆盘背面的圆螺母锁片，用钩形扳手拧下圆螺母，再用专用拉子将圆盘拉出。
2
The experimental results show that the technology of nutcircular 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。
3
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.