查询词典 frequency

A part of auditory neurons of inferior colliculus has characteriatics of multi-channel response, and the frequency of channel equal to the characteristic frequency of neurons.

小鼠下丘部分听神经元具有单通道反应特性，且通道的频率等于神经元的特征频率。

The results illustrate that the collisional absorption have a maximum value when the collision frequency is near the radiation frequency.

当入射电磁波的频率很低时，不均匀磁化等离子体中碰撞对雷达波的吸收非常小。

The IR result shows that conjugative effect is the reason for the red shift of stretching vibration frequency for carbonyl, meanwhile hydrogen bonds lead to the red shift of stretching vibration frequency for hydroxy groups.

红外振动光谱结果发现，共轭效应导致了羰基伸缩振动频率红移，氢键的存在导致了羟基伸缩振动频率红移。

Based on the derived frequency representation of each frame for convolutive mixtures, a modified discrete Fourier transform is proposed for the frequency domain convolutive blind separation. MDFT serves as an optimal transform in the minimum square error sense to replace the traditional DFT.

针对频域卷积混合盲分离，依据所导出的卷积混合信号每帧的频域表示模型，提出了一种最小均方误差意义下的最优变换－修正离散傅里叶变换，用于代替频域卷积混合盲分离中常用的离散傅里叶变换。

An optimization model of electricity and heat efficiency about intermediate frequency coreless induction furnace in the nonmagnetic process is established by using some restriction parameters such as power supply frequency and the diameter of steel stab,and its optimization design is done based on particle swarm optimization algorithms.

以电源频率和坯料直径为约束参数，建立了无芯中频感应电炉无磁性期电热效率优化模型，采用粒子群优化算法对其进行了优化。

The results indicate that the first ten step natural frequency range from 233.2Hz to 526.8Hz, the natural frequency is higher than the value specified by the standard.6. The profile equations of shaping gear ring are deduced out by profile normal line method. The involute and transition curves are automatically generated through the macro function in Solidworks. And the three-dimension model is built. Based on the three-dimension model, the deformation and dedendum stress is studied.

6应用齿廓法线法推导出了插齿加工的渐开线直齿内齿圈的精确齿廓曲线方程，并通过Solidworks中的宏功能采用Visual Basic语言编程实现了内齿圈齿廓渐开线以及齿根过渡曲线的自动生成，建立了内齿圈的精确三维实体模型，研究了内齿圈的轮齿变形及齿根应力。

In order to study dehumidify performance of variable frequency dehumidifier,transducer and performance test system were used to make dehumidifier work at different frequency and monitor dynamic parameter.

利用变频器和性能测试系统分别对除湿机进行变频调速控制和动态参数监测，从而研究变频除湿机的除湿性能。

A detector array target of laser distant-field detect system is designed, and two key factors are analyzed. To determine the size of the array target, the laser diffract effect and the influence of atmospheric turbulence are discussed, three factors that influence the resolution of the array target are analyzed. Three factors are the dimension of laser speckle resulted by atmospheric turbulence, space sampling frequency based on sampling theory and the loss of the frequency spectrum function of the array detector.

设计了一种激光远场直接探测系统，对系统中的两个关键问题进行了讨论，一、在探测器阵列靶板尺寸的确定问题上讨论了激光的衍射效应和大气湍流的影响；二、在探测器阵列靶板分辨率的确定问题上讨论了激光的衍射效应和大气湍流的影响；对第二问题讨论了对其有影响的三个方面：大气湍流引起激光碎斑尺寸，由采样定理决定的空间采样率，由阵列探测器的频谱函数引起的损失。

We compare it to fixed frequency networks, which are either too slow exhibiting unbounded delays, or are dimensioned for the worst case with very high frequency and are very power hungry.

我们将其与固定频率的网络相比，后者要不太慢，呈现出无节制的延迟，要不被定位用于很高频率的最坏情况，而且很耗功率。

The dimidiate frequency of early oil whirl was found clearly from HHT time-frequency spectrum, which magnified the parameter of oil whirl fault and provided information for early fault diagnosis.

该方法在早期油膜涡动中能够更加清晰地发现涡动二分频的存在，放大了涡动的故障特征，为早期故障诊断提供了方便。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。