涨落

The expectation value of atom dipole moment is always zero, but the fluctuation of dipole moment is a constant and not zero during the atomic spontaneous emission.

在原子的自发辐射过程中，其偶极矩的期待值总是零，但偶极矩的涨落恒等于一个不为零的常量，因此原子的自发辐射是由真空起伏导致偶极矩的涨落引起的。

This dependence can be explained by using a thermal fluctuation theory. Moreover, calculations show that the thermal stability of the exchange coupling is independent of the permalloy layer thickness.

用热涨落模型对实验结果进行了理论计算分析，分析表明热涨落模型能很好地解释以上结果，分析结果还表明Py层的厚度对交换耦合的热稳定行为没有影响。

Any of various physical phenomena in which some quantity is constantly undergoing small, random fluctuations.

在各种物理现象中，一些量恒常所作的小而随机的涨落，以最早研究这种涨落(1827)的布朗命名。

Through these expanding hypercycle chains, fluctuation phenomena of the system will bring the accumulation of local changes.

通过不断扩大的超循环链条，电信产业系统内部涨落现象带来的局部渐变得到积累，使得涨落突破一定的阈值，最终导致电信产业系统的整体突变现象的出现。

The fluctuations and phase transition properties of light intensity are investigated in Chapter 3 for a two-mode inhomogeneously broadened laser taking account of full saturation effects with multiplicative noise stemmed from disturbances in laser gain parameter.

第3章讨论了非均匀展宽双模激光中当乘法噪声由增益参数涨落引起并计入全饱和效应时，光强的涨落和相变特性。

The main features of the river basin eco-economic system are as follows: it is an open and non-balanced complex system; there exist non-linear mechanisms; and there are lots of random fluctuations with their amplifying mechanism and mutative qualities inside and outside the system.

流域生态经济系统的特征主要表现为流域生态经济系统是一个开放的复杂系统；是一个非平衡和复杂系统；存在着非线性作用机制；并且系统内外存在着大量的随机涨落及其涨落的放大机制和突变性。

Small height fluctuations were artificially introduced to the thin film samples by mechanically rubbing the sample surface with a rayon cloth before dewetting initiates. By comparing the dewetting morphology evolution and the characteristic length of dewetting structures of unrubbed and rubbed samples, the results clearly show that the dewetting mechanism for thinner polystyrene films with h≤13. 3nm is spinodal dewetting and that for thicker films with h≥13. 3nm is heterogeneous nucleation dewetting.

通过用绒布在薄膜表面进行摩擦，人为的引入一定程度的厚度涨落，通过比较有和没有表面涨落的薄膜的去湿形貌，可以清楚的识别出厚度小于13.3nm的聚苯乙烯薄膜的破坏机理为旋节去湿，而厚度大于13.3nm的聚苯乙烯薄膜的破坏机理则为成核去湿，形成双连续结构或孔洞都可以导致薄膜的旋节去湿。

This rise and fall of Walden at long intervals serves this use at least; the water standing at this great height for a year or more, though it makes it difficult to walk round it, kills the shrubs and trees which have sprung up about its edge since the last rise —— pitch pines, birches, alders, aspens, and others —— and,falling again, leaves an unobstructed shore; for, unlike many ponds and all waters which are subject to a daily tide, its shore is cleanest when the water is lowest.

间隔很久的瓦尔登湖的涨落至少有这样一个作用：在最高的水位维持了一年左右，沿湖步行固然困难了，但自从上一次水涨以来，沿湖生长的灌木和苍松，白桦，桤木，白杨等树木都给冲刷掉了，等它水位退下，就留下一片干净的湖岸，它不像别的湖沼和每天水位涨落的河流，它在水位最低时，湖岸上反而最清洁。

Based on some theoretical models, it is suggested that the fluctuation o f such orderings, which might result in carrier pairing, is the basis for the superconductivity to occur.

基于一些理论模型，我们认为相分离状态下的超导电性的发生可能就是基于这种有序态的涨落，该涨落导致载流子配对。

Therefore at low temperature, the fluctuations of charge and current in the RLC circuit are quantum mechanical effects, which is a quantum phenomenon originating from fluctuations of zero point vibration of the system.

在给出了介观RLC电路的动力学运动方程的基础上，计算了电路中电荷和电流的量子涨落，并研究了温度对量子涨落的影响。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。