1) frequency-division-domain
分频域
1.
From the view of trick recognition,features of signal decomposition structure in existing frequency estimation methods are analyzed,based on which,frequency-division-domain decomposition structure is proposed.
从特征识别角度分析了现有频率估计方法的信号分解结构的特点,并提出了一种分频域分解结构,将对应不同时间的多个单频信号融合构成一个组合信号,以利用时域已知信息并形成信息积累作用,能有效抑制干扰频率和削弱冲击噪声且计算量增加较少。
2) frequency-domain analysis
频域分析
1.
Short-term HRV including time-domain, frequency-domain analysis .
应用心率变异性时域、频域分析方法,分别评价其自主神经功能状态。
2.
This paper discuss the location of poles and zeros of network function and its instability,and the frequency-domain analysis of analysis of active RC network,emphasis two-orders low-pass negative-gain circuit,and the transient problem of one-order low pass circuit.
通过研讨网络函数的零点与极点分布及和稳定问题,以及有源RC网络的频域分析,着重讨论了二阶负增益低通电路,以及一阶低通电路的过渡过程等问题。
3.
It is pointed out that frequency-domain analysis is a necessary,beneficial and useful complement to time-domain analysis.
频域分析是时域分析的一种必要的、有益的补充,能够更好地指导我们的现场测试,帮助我们选择更好的安装方法。
3) frequency domain analysis
频域分析
1.
Observatioln mentally interferihg in occupation females in their premenstrual syndrome and changes of their frequency domain analysis;
职业女性经前期心理干预与心率变异频域分析
2.
A frequency domain analysis of iterative learning control for repeated paths;
重复轨迹运动迭代学习控制的频域分析
3.
The system has relatively completed functions, which include R wave detecting and locating, HRV time domain analysis, periodic map and AR modeling frequency domain analysis and Lorenz scattered plot.
采用 Matlab建立了适合于临床和科研的、功能较为齐全的心率变异性 (HRV)分析系统 ,该系统包括 R波的提取与定位、HRV时域分析、频域分析的周期图与 AR模型分析法 ,以及非线性分析的散点图法 。
4) frequency analysis
频域分析
1.
Frequency Analysis with its Application to Breakdown Diagnosis in Centrifugal Compressor
频域分析在离心式压缩机故障诊断中的应用
2.
The application of MATLAB is described in mechanical control engineering basis teaching using concrete examples of time analysis and frequency analysis in a contrasting way.
以时域分析和频域分析中的具体实例,通过对比的手法,说明了MATLAB在机械控制工程基础教学中的应用。
5) spectrum analysis
频域分析
1.
This new algorithm is based on the spectrum analysis instead of only sample errors and generalization of it is proved by sampling theorem.
根据小波理论提出一种基于频域分析的在线学习算法,并通过仿真试验对这种新的算法进行验证。
2.
The voice signals of 36 normal girls and 12 patients with light laryngeal disease are analysed,and the abnormal voice could not be detected in the spectrum analysis of the voice signals collected with low frequency.
对36例健康青年女性组和12例较轻程度喉病患者（低频采音4000Hz范围内无法检出）的嗓音信号进行频域分析，比较其高端相对信噪比，结论是频域分析中嗓音的高频采样可提高病态嗓音的检出率。
3.
Ultrasonic spectrum analysis is the ultrasonic testing technology which puts into use the spectrum analysis theory and approach.
超声波频域分析是把频域分析的理论和方法应用于超声检测的技术。
6) Frequency domain
频域分析
1.
Based on the PK?F method,an approach of three dimensional nonlinear flutter analysis in frequency domain is described herein,in which the effects of both structural and aeroelastic force nonlinearities have been taken into consideration.
在PK F法的基础上 ,考虑结构以及气动力随风速的非线性变化因素 ,提出了大跨度桥梁的三维非线性颤振频域分析方法 。
补充资料：超导电性的局域和非局域理论（localizedandnon-localizedtheoriesofsuperconductivity）
超导电性的局域和非局域理论（localizedandnon-localizedtheoriesofsuperconductivity）
伦敦第二个方程（见“伦敦规范”）表明，在伦敦理论中实际上假定了js(r)是正比于同一位置r的矢势A(r)，而与其他位置的A无牵连；换言之，局域的A(r)可确定该局域的js(r)，反之亦然，即理论具有局域性，所以伦敦理论是一种超导电性的局域理论。若r周围r'位置的A(r')与j(r)有牵连而影响j(r)的改变，则A(r)就为非局域性质的。由于`\nabla\timesbb{A}=\mu_0bb{H}`，所以也可以说磁场强度H是非局域性的。为此，超导电性需由非局域性理论来描绘，称超导电性的非局域理论。皮帕德非局域理论就是典型的超导电性非局域唯象理论。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条