A type of screw and nut with coarse pitch was applied to realize thread core demoulding automatically.
采用螺距粗的螺丝和螺母实现螺纹型芯自动脱模。
2
The beetles are the first animals found to have a screw-and-nut mechanism in their bodies.
人们也是第一次在这种甲虫身上看到动物有螺丝——螺母式的身体构造。
3
It looks like the beetles are using the screw-and-nut mechanism in the opposite way to humans, says Chris Lyal of the Natural History Museum in London.