To generate power you have to do that at a repetition rate.

要产生能量，您必须以重复率进行。

Because our repetition rate is low, it gives the laser lots of time to charge up between pulses, which means a high energy beam, so that we can actually chew in and remove that material.

因为我们的重复率很低，它给了激光很多时间在脉冲之间充电，而这意味着高能量光束，这样我们就可以蚀刻并去除材料。