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- A fault diagnosis mothed for hydro-generator units has been put forward according to their vibration frequency spectrum characteristics. 摘要针对水轮发电机组振动的频谱特点，提出了基于小波包分析的水轮发电机组振动的故障诊断方法。
- vibrating frequency spectrum 频率谱图
- A filter whose transfer function is matched with the frequency spectrum function of input signal. 其传递函数与输入信号的频谱函数相匹配的一种滤波器。
- Vibration Frequency Spectrum Characteristics and Fault Diagnosis of the Big Bearings of Softcalender's Bottom Roll in a Modern Paper Machine 高速纸机软压光辊大轴承故障频谱特征与诊断
- Alters the frequency spectrum of signals passing through it. 当通过它时能够改变信号的频谱。
- Frequency Spectrum Measurement of Noise of Image Intensifiers[J]. 引用该论文 钱芸生;常本康;童默颖;刘磊.
- The inverted frequency spectrum,in fact, is Fouriers retransform. 倒频谱是频域信号的傅里叶再变换。
- Accordingly, the higher the vibrating frequency, the smaller the surface roughness, and the longer the tool life. 在一定条件下，振幅越小，加工表面粗糙度越大，刀具磨损越快；振动频率越高，加工表面粗糙度越小，刀具磨损越轻。
- The clock vibrating frequency of electronic gauge changes from formation temperature. 电子压力计时钟振荡频率随地层温度的变化而变化。
- It has been pointed t hat the compaction of the weathered stone is influenced greatly by vibrating swi ng and has the optimal value of proper vibrating frequency. 结果表明,振幅对风化石压实效果影响最大,其次为振动频率和振动时间,振动频率存在一个最佳频率;
- The vibrating frequency of the quartz crystal in the electronic watch is counted by the circuits to make the hour, minute and second. 电子表中的石英晶体的振荡频率是由线路计数来定小时、分和秒。
- The result shows that when the engine is in idling,its vibrating frequency is close to the natural frequency of the body frame. 结果显示,当发动机在怠速工况时,它的振动频率接近于客车车身骨架的固有频率,易发生共振,应尽量避免。
- A system that divides the frequency spectrum of a signal into a number of bands, which are separately transmitted and then recombined. 一种先将一个信号的频谱分成几个可独立传送的频带然后再合成的方法。
- By using the test result of an model s free vibrating frequency and vibrating form,the free vibrating characteristic and disciplinarian of curve arch bridge are analyzed. 弯拱桥作为一种空间结构物,其自由振动也呈现出空间特性,通过对弯拱桥模型的自振频率及振型的测试,分析了模型的自振特性及自振规律。
- The Time Domain Wave Form and Frequency Spectrum of Modulated Signal of uexp( tt/ Pw) Multiply by Carrier with Uniform Phase Noise. 单边递减波电压讯号乘上含有均匀相位杂讯载波之调变讯号时域波形及频谱。
- 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。这类似于ieee 802.;11标准。
- Peaking in the frequency spectrum due to repetition of signals by multiple reflection is not confined to water layers. 多次反射波引起的信号重复在频谱中造成的峰值增多，并不仅仅局限于水层。
- Each 1.5MHz frequency spectrum of DAB can transmit six sets of programmes with CD quality. DAB每1.;5兆赫的频带可供传送六套CD音质的节目。
- The suggestions on the further research of the frequency spectrum analysis are provided. 就频谱分析的进一步研究提出了建议。
- Moreover, since the atoms are in random thermal motion the frequency spectrum will be altered by the Doppler effect. 而且，由于原子是在作无规则热运动，多普勒效应也会使频谱发生改变。
