查询词典 difference frequency

By analyzing the receiving performance of Orthogonal Frequency Division Multiplex system, frequency offset and the timing of system are studied.

通过分析现有OFDM系统接收性能，对影响OFDM系统性能的频偏和系统定时等因素进行了研究。

Analyzed the pertinency about the grain structure of alloy Al-4wt% Cu between the pulse current, voltage, capacitance charged frequency, circuit oscillatory frequency.

分析了Al-4wt%Cu合金组织的晶粒尺寸和脉冲电流、电压、冲击频率以及电路自振荡频率之间的相关性。

The results of experiment show after inputting impulse current to alloy Al-4wt%Cu, its grain structure can be refined from 1.5 mm to 0.2 mm at impulse voltage 2 kV, capacitance charged frequency 0.5 Hz and circuit oscillatory frequency 50 Hz.

结果表明：脉冲电压2kV、电容的冲击频率为0.5Hz、电路的振荡频率为50Hz时，脉冲电流对Al-4wt%Cu合金作用后，晶粒尺寸由1.5mm减小到0.2mm。

Their vocal quality is better than non-passerine, but still much less than oscine passerine. Compared with non-passerine, they appeared longer syllable length, higher basic frequency and more viable frequency ranges. Though the amplitude modulation properties enhanced their vocal production, the type of syllable is still stable and less of variety. So thephrase consisted of syllables are comparatively few and changes of the tone are relatively less.

且表现出很强的频率调制特性和特有的幅度调制特性，相对的音节时程比较长，基频较高且频率变化范围较大，所特有的幅度调制特性更增加了其控声的能力，但其音节的种类仍很单一，缺乏变化，由音节所组成的句型较少，音调变化幅度不大，因此，其叫声质量尽管较非鸣禽有所改善，但相对鸣禽而言却又远远不如。

High outcrossing rate might lead to high gene flow frequency and the maximum frequency of gene flow was determined by outcrossing rate.

实验结果显示，强烈的自花授粉竞争可能是导致栽培稻品种间极低的异交率以及基因漂移频率的主要原因之一。

When the pollen density of pollen donor exceeded the critical density, the gene flow frequency did not increased any longer, and the maximum gene flow frequency detected was equal to the outcrossing rate of pollen receiver in theory.

在其他因素都固定的情况下，如果花粉受体的异交率较高，那么到该花粉受体的基因漂移频率也相对较高。

The frequency of look good as result of recieving praise with outer website: What this point to is the frequency that your website webpage is cited by others.

网站在外的露脸次数：这一点指的是你网站网页被别人引用的次数。

Using 75 varied low frequency noise samples with adjusted-loudness as sound stimuli, we investigate sound quality for low frequency noise with paired comparison method.

以等响处理后的 75 个稳态低频噪声样本为例，采用成对比较法，设计并完成了有 24 位评价者参与的大规模实验室主观评价实验。

In this paper,a new method of measuring the resonant frequency of the RLC parallel resonance circuit was intro- duced,which makes the asymmetric amplitude-frequency curve symmetric.

介绍了用Origin变换坐标，将不对称的RLC并联电路的幅频特性曲线对称变换，从而精确求解其共振频率的方法。

On the distribution transformer, whose impedance is independent of varying load while the frequency is higher than 25KHz, and the parallel resonance frequency of which is in 3~10KHz.

由探讨知，杆上配电变压器的并联共振频率约在3~10KHz之间，在此频率范围，信号的分路损失最小，又载波频率立於25KHz时，其分路损失几与负载的变动无关。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。