周期性的

The time evolution of two-atom entanglement displays periodic entanglement and disentanglement when the coupling coefficient of Stark effect is much smaller, while the disentanglement will disappear when the coupling coefficient of Stark effect is much larger.

当 Stark 效应耦合系数很小时，两个原子间纠缠度的时间演化特性呈现周期性纠缠和退纠缠现象；当 Stark 效应耦合系数很大时，原子间退纠缠现象消失，即原子始终保持在纠缠状态。

In chapter 4, for the first time, we studied the control role of the relative phase between the probe and driving fields on inversionless gain of the probe field in a closed and Doppler broadeningΛ-type three-level system with the spontaneously generated coherence.

结果发现：(1)不管探测场和驱动场是同向传播还是反向传播，驱动场是失谐还是共振，无反转增益总是随相对位相的改变而作周期性变化，周期为2π。

It creates convenience for persons to make a study of the periodicity shown by the electron affinity.

为研究电子亲和势的周期性提供了方便。

Results Plastic bronchitis, with a relatively high mortality, is a disease characterized by repeated and periodical emptysis and bronchial cast, mostly secondary to pulmonary infection, it's pathogenesis is unclear.

结果 纤维素性支气管炎临床上是以反复或周期性咯血、咯出支气管管型为特点的疾病，多继发于肺部感染性疾病，其发病机制尚未完全清楚，病死率较高。

ResultsPlastic bronchitis, with a relatively high mortality, is a disease characterized by repeated and periodical emptysis and bronchial cast, mostly secondary to pulmonary infection, it's pathogenesis is unclear.

结果 纤维素性支气管炎临床上是以反复或周期性咯血、咯出支气管管型为特点的疾病，多继发于肺部感染性疾病，其发病机制尚未完全清楚，病死率较高。

For some time, she has craved the scent of eucalyptus on a recurrent basis.

有一段时间，她会周期性地渴望桉树的香味。

To address the phenomenon of temporary communication blindness resulted from fixed period beacon exchange in mobile wireless sensor networks, an adaptive beacon exchange algorithm is proposed.

针对移动无线传感器网络中周期性信标交换引起的通信暂盲现象，提出一种自适应信标交换算法。

The doctor has a fellow feeling for his migraine patients, since he suffers from it himself.

这位医生同情他的周期性偏头痛病人，因为他自己也有此病。

Power System forced power oscillation is a kind of low frequency oscillation caused by persistent periodic small disturbance.

电力系统强迫功率振荡为持续的周期性小扰动所引起低频振荡现象。

Here, as well, the experience in the United States is germane to the issue of the cyclical trigger.

在这方面，美国经验同样与经济周期性变化的引发因素问题息息相关。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷