Where the temperature is low compared to even the lowest excitedlevel.
当温度，比最低激发能低的时候。
2
Where the kT is lower than, by far, than the first excitedlevel. Everything's in the ground state.
到目前为止的kT都比第一激发态能级低，所有状态都在基态。
3
Conclusions brain wave therapy could improve the cognitive function in the senile depression by adjusting and balancing brain electric activity and excitedlevel.