In this, bioink gets loaded into a printing chamber and pushed through a round nozzle attached to a printhead.

这项技术将生物墨水载入打印机，然后将它挤入打印头上的柱状喷嘴。

So the team created a printhead that adjusts its position to  compensate for the movement of the drone.

因此，该团队创建了一个打印头，可以调整其位置以补偿无人机的移动。