The researchers shut off the control beam long enough to give the wave time to travel the 160 microns between the BECs and then reactivated it.

研究人员将控制光束关断足够长时间，以使波动来得及通过两块凝聚物之间的160微米间距，然后重激发它。

This increased speed is important because experiments on BECs typically need to be repeated hundreds of times to build up good statistics for a range of experimental conditions.

因为BEC实验通常得重复进行好几百次，以便在实验条件里得到够好的统计数据，所以加快速度很重要。