frequency spectrum
[物] 频谱;频率谱
2026-03-21 08:19 浏览次数 13
[物] 频谱;频率谱
frequency relaxation spectrum频率松弛谱
frequency response spectrum频率及应谱
frequency following spectrum频率跟随谱
frequency modulation spectrum频率调制谱
frequency hop spectrum communication跳频扩谱
frequency-spectrum therapeutic频谱治疗仪
frequency content频率含量,频谱;频率组成
low frequency line spectrum低频线谱
ultralow frequency dielectric spectrum超低频介电谱
switching frequency spread spectrum切换频率展频
andrea goldsmith: you can break up the frequency spectrum in some way whether it’s time or frequency or codes so that you assign it to users so they don’t interfere with each other.
安德里亚?戈德史密斯:人们可以采取某种方式来划分频谱,不管是通过时间、频率或者编码加以划分,然后将频段分配给用户,使他们之间的通话不受干扰。
the application of hardware phase-locked loop technology can prevent the frequency spectrum leakage effectively.
硬件锁相环技术的应用,有效地防止了频谱泄漏;
and it has introduced such several kinds of typical modules as data acquisition, controller, frequency spectrum analysis and remote data transmission, etc.
并在此基础上,详细介绍了数据链接、控制器、频谱分析、远程数据传输等几种典型模块。
the limited radio frequency spectrum appears more and more precious as the wireless communications and mobile communications in particular are gaining momentum.
无线通信,尤其是移动通信的迅速发展,使原本有限的无线频谱资源越来越显得珍贵。
the entire available frequency spectrum is used with 79 hops of 1mhz bandwidth , analogous to the ieee 802.11 standard
以1mhz带宽79跳来利用这个完整的可用频谱。
polarization isolation and limiting frequency spectrum outside bandwidth are adopted in order to attain channel isolation specification.
系统采用极化隔离加带外频谱抑制的方法,达到了信道隔离的技术指标。
results show that the frequency spectrum characteristics of arc diffluence is accordance to jet fluctuation. arc diffluence in the new gun is confined obviously.
试验结果表明,电弧分流和射流脉动的频谱特性是一致的,在使用新等离子体喷枪时,电弧分流明显得到了限制。
this can cause some input frequency spectrum distortion which will have an effect on the computed frf.
这会引起一定的输入频谱失真,对计算得到的频响产生影响。
as frequency divided multiplex access is widely adopted in communication satellite system, strict frequency spectrum limits on modulator is mandated.
通信卫星的频分复用机制,对卫星通信系统的发送信号频谱成型提出了严格的要求。
as a traditional method, the system based on fourier analysis and frequency spectrum analyzer can not be used to test 1/f noise timely, fast and accurately.
传统基于傅立叶分析和频谱分析仪的微弱信号检测方法无法对1/f噪声进行实时、高速、精确的测量与分析。
applying period frequency spectrum method to analysis of digital seismic recording is discussed in this parer .
论述了周期-频度谱方法在分析数字化地震记录中的应用。
the main effect of inflectional instability mode in the final breakdown seems to interact with the disturbances having developed and thus widens the frequency spectrum to turbulent state.
属于拐点不稳定性的高频二次不稳定模态对最后转捩的影响主要体现在与其它扰动的相互作用,并导致出现紊流状态宽带频谱。
the fault is diagnosed by extracting the fault feature component from the frequency spectrum of the modulated signal.
通过对调制信号作谱分析,以其频谱中是否存在某种故障的特征频率分量来诊断有无该种故障。
also, a large frequency spectrum (698-806 mhz) was freed by switching over from analog tv to the digital one.
此外,从模拟电视信号到数字电视信号的切换也释放了广阔的频道(698-806mhz)。
the correlated information can be picked up in the frequency spectrum charts of dynamic resistance curves.
动态电阻曲线频谱图中也同样可以提取出与熔核直径相关的信息。
in addition, the dynamic resistance in spot welding and its frequency spectrum are analyzed. the relationship between the dynamic resistance curve without type character and nugget size is founded.
另外还对焊接过程的动态电阻进行了分析,研究了不具有典型变化特征的动态电阻曲线与熔核直径的关系,并对动态电阻曲线进行了频谱分析。
figure 3-5 shows the general frequency spectrum of these interference sources in comparison with other noise signals such as 1/f and thermal noise.
图3-5示出这些干扰源的一般频谱情况,并与诸如1/f噪声和热噪声等的噪声信号进行比较。
our digital data link uses the frequency spectrum allocated to small uas much more efficiently than the analog link it replaces.
我们的数字数据链采用频谱分配给小型无人机的效率远远高于模拟系统。
their main effect in the final breakdown seems interact with the disturbances is developed and thus widens the frequency spectrum to turbulent state.
高频二次不稳定模态对最后转捩的影响主要体现在与其他扰动的相互作用,并导致出现紊流状态宽带频谱。
using frequency spectrum analysis of phase function to calculate its auto power spectrum can reflect its frequency structure.
利用相函数的频谱分析求其自功率谱,可以反映它的频率结构。
then, make monitoring on ordinary trouble, and frequency spectrum analysis on all kinds of lubricants, and analyses mechanism of happened faults to determine fault causes.
然后对常见故障进行监测,主要对各种润滑油脂进行频谱分析,分析故障发生的机理,确定故障的因果关系。
the influence of some factors on pressure oscillation is studied by frequency spectrum analysis.
采用频谱分析方法,分析诸因素对压力振动特性的影响。
the principles and experimental results of a frequency spectrum analyzer for all types of single transient processes are described in this paper.
本文叙述了一个适用于各种单次瞬态过程的频谱分析仪的工作原理和实验结果。
a new method, based on the analysis of frequency spectrum of instantaneous power, for the discrimination between internal fault currents and inrush currents in transformer is proposed.
在分析瞬时功率频谱特性的基础上,提出了一种基于瞬时功率的变压器励磁涌流和内部故障电流识别新方法。