... 轧机前后工作辊道 front and back mill tables 前辊 feed roller; front roll 剪机 shearing machine ...
2
?前滚翻
...前滚翻 forward roll; forward somersault; front roll; roll forward to stand up with leg straightened; roll forwards 背后滚球 ball rolls on the back of body .
The frontroll (active roll)realizes automatic track-propulsion;
前辊（活动辊）实现自动跟踪推进；
2
If you're on a witness protection program or you're sort of fugitive you probably don't want to sit on the frontroll.
如果你在证人保护计划之内，或者是个逃犯级人物，就尽量不要坐在前排了。
3
Safety of installed in the frontroll bearing and the distance between the screw, it cast iron manufacturing, the sensitivity is high, easy to be destroyed.