The shafts each carry a row of impellers for intermittently urging material on the sortingconveyor upward and in the conveying direction.
在每个轴间歇性要求携带的分拣输送材料向上和输送方向的叶轮行。
2
In future, Dr Butt envisages, the egg-sorting operation of a large hatchery might look like this: A conveyor belt moves the eggs along, gently jostling them until their allantoic sacs point upright.