In this thesis, we study the quadrature squeezing spectra produced in the resonance fluorescence of a two-level atom driven by a strong coherent field and a weak amplitude-fluctuating field .
本文应用共振荧光理论，研究了由相干场和随机场驱动的二能级原子荧光场的压缩谱。
But ma said that, in the field, the manure will take longer to work because of differences in oxygen supply and fluctuating temperatures.
但是马辉文说，由于氧气供应和温度的变化，鸡粪在田间需要更长的时间才能见效。
Geophysicists have long known that the source of the fluctuating magnetic field lies deep in the center of the earth.
地球物理学家很早就知道，地球磁场变化的原因深藏于地球中心。
Hereby, the stress field on superficial slope could be divided into regions of stress lowering, rising and fluctuating from the outside to the inside.
据此，将斜坡浅表部应力场由表及里划分为应力降低带、应力增高带及应力波动带。
The ABEEM/MM force field for protein model is the fluctuating charge model for protein combined atom-bond electronegativity equalization method (ABEEM) and molecular methanics(MM).
MM蛋白质力场模型是应用于蛋白质体系的原子-键电负性均衡方法（ABEEM）与力场（MM）相结合的浮动电荷模型。
Based on the data of a long term field experiment of dryland crops, this article points out that yield fluctuation, expressed in fluctuating coefficient, is a regular phenomenon in dryland farming.
根据旱地作物长期田间试验数据，论述了旱作农业生产中作物产量波动性是一个规律性现象，并用波动系数加以表述。
For the magnetic perturbation contribution, we obtain the frequency shift of modes with different degree as a function of the spectrum of fluctuating magnetic field.
如果只考虑磁扰动的贡献，不同值的振动模的频率变化仅只是涨落磁场能谱的函数。
A fluctuating magnetic field is produced in the iron.
铁心中就产生交变磁场。
According to the particular profile of mean and fluctuating wind speed in hilly terrain wind field, mean, background and resonant wind loads of tall buildings are investigated.
根据山地风场中特有的平均和脉动风速特性，研究高层建筑平均风荷载、背景和共振等效风荷载特性。
According to the particular profile of mean and fluctuating wind speed in hilly terrain wind field, mean, background and resonant wind loads of tall buildings are investigated.
根据山地风场中特有的平均和脉动风速特性，研究高层建筑平均风荷载、背景和共振等效风荷载特性。
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