在圆环中只有两个自旋粒子时，外加磁场大于某个阈值时，一对自旋粒子之间才能产生纠缠，而且纠缠是时间的周期性函数。
For a ring of two spins, the entanglement between the two spin particles can be created and is a periodic function of time when the external magnetic field is greater than a critical value.
通过控制器控制某一变量或函数进行周期性变化。
Periodic change imposed on a controlled variable or a function by a controller.
传统的脉冲式医用超声成像系统的模糊函数由于存在周期性的速度模糊和距离模糊，影响了图像的质量和分辨力。
In traditional pulse medical ultrasonic imaging system, the ambiguity function has periodic distance ambiguity and velocity ambiguity, this affects the image quality and resolution.
信号检测；周期性信号；信号相干函数；统计理论；周期图。
Signal detection; Periodic signal; signal coherence function; Statistical theory; Periodogram.
利用非定常流函数涡量方程数值模拟圆柱突然起动尾流涡旋的形成及周期性脱落过程。
The unsteady equations of stream and vorticity functions were used for numerical simulation on the process of the vortex formation and periodic shedding from an impulsively started circular cylinder.
在磁场保持不变的情况下，纠缠度的时间演化呈现周期性变化的正弦函数形式。
If the magnetic field is fixed, the time evolution of the entanglement is periodic and is a sinusoidal function.
首先利用EMD方法对NYMEX市场的原油期货价格进行分解，得到一系列平稳且具有较强周期性的本征模函数(IMF)和一个趋势项。
First we employ EMD method to decompose the crude oil prices in NYMEX, and obtain a series of intrinsic mode function (IMF), which are stationary and of strong periodicity, and a trend term.
周期函数的周期性是中学数学中的教学内容，掌握了函数的周期性，对函数性质的研究会带来不少方便。
This paper is intended to make a systematic study of periodic functions and to popularize them in teaching and learning.
由于仪器函数的自身线宽及其周期性的加宽作用结果，导致透射函数的半峰值线宽受到加宽，可见度下降。
The full width of transmission function at half maximum is broadened and the visibility is reduced because of the instrumental linewidth and the periodicity of transmission function.
结果表明：电荷与电流的时间演化函数由雅可比椭圆函数替代，而且在电路中显示周期性压缩效应。
The results indicate that the time evolution function of charge or current is the Jacobian elliptic function instead of a sine one, and the squeezing effect appears periodically in the circuit.
该辐射噪声可视为周期性激励与信道传递函数的卷积构成。
These noises can be considered to be composed through convolution of many kinds of excitation source and the transform function of oceanic acoustic channel.
得出了该路周期性信元流的排队时延分布、时延抖动的自相关函数和功率谱。
The probability mass function of queueing delay, the autocorrelation and power spectrum of delay jitter for this periodic cell stream are derived.
得出了该路周期性信元流的排队时延分布、时延抖动的自相关函数和功率谱。
The probability mass function of queueing delay, the autocorrelation and power spectrum of delay jitter for this periodic cell stream are derived.
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