您要查找的是不是：
- periodic gain region 周期性增益区
- When the Rabi frequency of the driving field is larger and reach a threshold,a special gain region will appear by adjusting the detuning of the probe field. 驱动场Rabi频率较大而达到某一阈值后，调整探测场的失谐将出现特别增益区。
- resonant periodic gain structure 周期性共振增益结构
- adjustment of prior period gain or loss [经] 调整前期损益
- That period was a bright page in the history of Chinese literature. 那个时期是中国文学史上光辉的一页。
- Let us hope that the period of this injustice will be over soon. 让我们希望这个不公正的时期很快结束吧。
- Not incidentally,gaining regional hegemony is probably the only way that China will get back Taiwan. 美国竭力遏制台湾回归祖国（除非马英九就共产党）。中国人就是一盘散沙。
- Childhood is a period of rapid growth. 幼年是生长迅速的时期。
- He consulted the chronicles of the period. 他参考了这一时期的编年史。
- He had to decide within a given period. 他得在一定时间内作出决定。
- She has a detailed knowledge of this period. 她对这段时期的情况了解地相当详细。
- In that period auto sales hit a14-year low. 这时期汽车销售量达到14年来最低水平。
- In this period, unemployment reaches record levels. 这段时间的失业人数又达到了创纪录水平。
- Which period of history are you studying? 你正在学哪一段历史？
- The birds of a specific region or period. 鸟类区系某一特定地区或时期内的鸟类
- Can you tell me the time period when it was stolen? 能不能告诉我大概什么时候被偷的？
- Chaucer wrote in the late mediaeval period. 乔叟写作的时代是中世纪末。
- She'll be away for an indefinite period. 她将离开一段时间，何时回来未定。
- optical gain region 光增益区
- This was the most difficult period of his life. 这是他一生中最艰难的时期。
