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- STUDY ON PARAMETRIC RESONANCE FREQUENCY BAND OF ELEVATOR ROPES 电梯钢丝绳的参数共振频带研究
- resonance frequency band 谐振频带
- This effect is obvious at lower frequency band. 这种效应在振动低频区段更为显著。
- The assigned frequency band is 928 MHz to 902 MHz. 那分配频率乐团是 902个百万赫兹至 928个百万赫兹。
- At high frequency band,the frequency response error of a peak detector is the high frequency resonance error mainly produced by the distributive parameter. 峰值检波器的频响误差在高频段主要是由分布参数产生的高频谐振误差。
- Abstract: At high frequency band,the frequency response error of a peak detector is the high frequency resonance error mainly produced by the distributive parameter. 文摘:峰值检波器的频响误差在高频段主要是由分布参数产生的高频谐振误差。
- We can't hear any program when we turn our radio onto this frequency band. 当收音机调到这个频段上时,什么节目也收听不到。
- Based on the equivalent circuit, the resonance frequency equation is derived and the resonance frequency is obtained. 在此基础上,推出了弹性薄圆盘径向振动的频率方程以及振子共振频率的表达式。
- The superimposition method adds a signal at its resonance frequency with a signal at the subharmonic frequency. 本研究并提出两类波形以有效诱发穴蚀效应,分别为串接法及重叠法。
- Resonance frequency of the microvalve is much higher than the working frequency of the thermal actuated micropump. 分析表明本文中的微型阀的固有频率比热驱动微型泵的工作频率高得多,因此阀片的动态特性可不予考虑。
- Changing the structure of the excitation device can change the resonance frequency of the PZT. 通过改变压电陶瓷的结构可以改变压电陶瓷的谐振频率。
- Another attribute is the flux or radiant power that can be delivered in that narrow frequency band. 另一个性质就是在这样窄的频带内可以给出很高的光通量或辐射功率。
- Furthermore, mineral oil can reduce resonance frequency and change VSWR, but weekly affect detection performance of antenna sensor. 变压器油使天线的谐振频率有所降低,改变了天线的驻波特性,但不影响天线的检测能力;
- The electronic filter attenuates the resonance frequency of the accelerometer to prevent overloading of the DA equipment. 电子滤波器可以减少加速表的谐振频率,防止DA设备过载。
- A specified frequency band for the transmission and reception of electromagnetic signals,as for television signals. 频道,波道传送和接收电磁信号的一特定的频率波段,如电视信号
- The design is very suitable for wireless communication systems which work in ISM frequency band. 所设计的软硬件接口非常适合在ism频段的无线通信系统中应用。
- A FFT spectrum analyzer was used to measure the resonant frequency. 试验时采用六种实大尺寸试材,共振频率之测定系利用FFT频谱分析仪。
- Combined with the graph correlating the first resonance frequency with driving point location, the method localizes the crack by monitoring a jump in the graph. 结合裂纹梁第一阶谐振频率与驱动点位置关系曲线,利用曲线上出现的突变点,准确地识别了梁的损伤状态和裂纹损伤位置。
- The distance between the acoustic-emission source and the receiving transducer, and the background noise level are primary factors in selecting a particular frequency band. 声发射源与接收讯号传感器间的距离以及环境噪声的电平是选择频带的主要依据。
- As the aperture width of input iris is narrowed down, SWR decreases, before reaching critical coupling, then increases, and resonance frequency also slightly rises. 输入膜片缝隙由宽变窄的过程中,驻波比由大变小,达到临界耦合后,驻波比又由小变大,且谐振频率略有升高;