一个铯钟的工作原理是:将铯原子暴露于微波中,直到它们以一个频率共振,然后以一个相应的周期作为时间度量。
A cesium clock operates by exposing cesium atoms to microwaves until they vibrate at one of their resonant frequencies and then counting the corresponding cycles as a measure of time.
尽管从物质层角度来看这很悲惨,但所有的非物质力量都将撤回而继续前进,回到它们共振的造物而在前方周期中演化回家。
Although this may be sad from a physical point of view, all nonphysical forces shall retract and carry on, returning to those creations that they are resonant with for their own return cycle ahead.
对于单马达转向架,转向架上的两根轴由同一个马达驱动,常常会遇到扭转的共振,这将导致周期性的滑动。
Monomotor bogies, where both axles of the bogie are driven by a single motor, often encounter torsional resonances, which lead to periodic longitudinal slip.
三波共振相互作用低频振荡周期与初始扰动振幅有很强的相关关系;
The low-frequency fluctuation periods and the initial amplitudes have close relationship in the resonance interaction.
本文研究了用与受迫力谐波共振的周期摄动抑制含二次非线性项受迫振动系统中的混沌。
In this paper, suppression of chaos in a forced vibration system with a square term by resonant periodic perturbations is studied.
利用系统从混沌状态到大周期转变时所表现出的共振锁频性质,进行了微弱频率变化信号的仿真提取。
The simulated extraction of weak frequency variation signal is carried out with the expressed Resonant frequency locking property when system transits from chaotic to great periodic motion.
给出了带有双侧共振的非线性微分方程周期解存在性的一个新的结果。
A new result about existence of periodic solutions of nonlinear differential equations with double resonance will be given.
特别研究了光栅周期和厚度对波导共振模式角分辨调谐速率的影响。
In particular, the influence of the grating period and waveguide thickness on the tuning rate of the resonance waveguide mode was charatcerized.
研究含有高斯白噪声的周期脉冲信号,通过阈值系统后的随机共振特性。
It is investigated that the characteristics of stochastic resonance of the periodic pulse signal added Gaussian white noise through a threshold system.
并对系统多重参数组合共振情况进行数值模拟,分析了周期解、分岔和混沌问题。
Use numerical simulation method to simulate the multi-parametric combination resonance condition for the system, analyse the periodic value, bifurcations and chaos of the system.
根据地球自由核章动在周日重力潮汐观测中的共振效应确定了自由核章动的复本征周期和品质因子Q值,研究了极移重力效应;
The complex eigen period period and Q value of the FCN are evaluated based on the resonance observed in the diurnal tidal gravity, the gravity change due to the polar motion is also studied.
本文研究了三元准周期超晶格的电子共振隧穿性质。
The resonant tunneling of three-tile quasiperiodic superlattices has been investigated in this paper.
分析了利用非周期随机共振进行基带信号检测的物理机制,提出了一种基于统计的信号恢复新方法。
The physical mechanism of signal processing based on the aperiodic stochastic resonance (ASR) system is analyzed, and a statistical approach for recovering the binary signal is proposed.
然后用小参数法求出了非线性的非共振周期解和共振周期解。
The nonlinear resonant and non-resonant periodic solutions are obtained by the small parameter methods.
运用绝热近似理论,研究了由加性噪声和乘性噪声及周期信号驱动的光学双稳系统的随机共振现象。
The stochastic resonance(SR)in an optical bistable system under the simultaneous action of multiplicative and additive noises and periodic signal is studied using the adiabatic approximation theory.
此外,光栅周期可用于调整共振反射波长。
Furthermore, the grating period can be used as a parameter to adjust the wavelength of resonance reflection.
研究结果发现,组合共振区域内发生两种不同的拟周期运动和组合周期运动,而且第一振型次谐波共振曲线延伸到组合共振区域。
The results obtained show that several motions may occur in the region of combination resonance, including two kinds of quasi-periodic vibrations and combined periodic motion.
利用系统从混沌状态到大周期转变时所表现出的共振锁频性质,进行了微弱频率变化信号的仿真提取。
The simulated extraction of weak frequency variation signal is carried out with the expressed Resonant frequency2locking property when sys2tem transits from chaotic to great periodic motion.
相对于正常语音来说,耳语音在公共场合的信噪比较低,而且没有基音周期,共振峰不明显,所以耳语音增强具有一定的难度。
The SNR in public environment of whispered speech is lower than normal speech and the former hasn't pitch period and its formants are not obvious, so whispered speech enhancement is harder.
发现这种结构的带隙来源于结构的周期性及所接分支所形成的共振态。
It was discovered that the photonic forbidden bands originates from both the periodicity of the system and the resonance states of the grafted branches.
就同一种准周期结构的系统而言,系统的厚度和入射波的入射角度对滤波频率以及共振模的品质因子都有重要的影响。
However, the thickness of the system and the Angle of incident waves also influence the frequency of wave-guide and the quality factor of resonant modes.
首先,在随机共振的原理基础上,给出了利用随机共振原理检测微弱周期信号的基本方法,并对方法进行了分析与验证。
Firstly the basic principle of stochastic resonance is introduced, an approach for detecting weak periodic signal using stochastic resonance theory is presented.
因此改变航速应视波浪情况,力求避免调整航速而带来纵摇周期与波浪周期接近出现的“共振”现象。
Swing should depend on wave. Avoid resonance arising from the cycle of vertical shake being near the cycle of wave because of adjusting speed.
研究发现:一维双周期光子晶体的光子带隙结构中在两光子晶体带隙交叠处具有很明显的两共振透射峰。
The investigation results show that two transmittance peaks exist at the crossover of the two photonic crystal PBG in 1-d dual-periodical photonic crystal.
研究发现:一维双周期光子晶体的光子带隙结构中在两光子晶体带隙交叠处具有很明显的两共振透射峰。
The investigation results show that two transmittance peaks exist at the crossover of the two photonic crystal PBG in 1-d dual-periodical photonic crystal.
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