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- The signal environment of ECM is more and more complex, so frequency measurement methods must be high-speed and precise in broad frequency band. 面对日益复杂的电子战环境,要求必须在很宽的带宽范围内,对频率信息进行快速、高精度的测量。
- The conventional filtering method would damage the seismic signal and prove inadequately in removing the strong noise with broad frequency band from the seismic signal. 常规消除工频干扰的滤波方法会伤害有效信息,并且对频带较宽的机器噪声亦不适用。
- It is used main for ferroelectric , piezoelectricity,electro-optic and nonlinear optical.It is made up the broad frequency band,modulator,high stabeness resonator and band pass filter etc. 主要用于铁电、压电、电光和非线性光学,可制作宽频带、调制器、高稳定性谐振器和带通滤玻器等。
- broad frequency band 宽频带
- 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。
- Helical antenna has not only almost identical to the resistive input impedance in broad bandwidth, but also works by the end of super-gain front lobed map in the same frequency band. 螺旋天线不仅在宽频带上具有近乎一致的电阻性输入阻抗,而且在同样的频带上按超增益端射阵的波瓣图工作。
- Electrodynamic shakers are used in most cases because they can operate over a broad frequency range with accurately controlled waveform. 极大多数的情况下应用电动振动台,因为它能在一定广的频率范围内工作并且能准确地控制波形。
- 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。
- And the coaxial detector is made up of a thermionic diode, coaxial line, filter and external circuit, which can work in a broad frequency range. 而同轴型探测器由热离子二极管、同轴波导,滤波器和外电路组成,可以宽带使用。
- The SQF/PI composites show an excellent dielectric property,(stable)(dielectric) constant and dissipation factor in the broad frequency range from 1?kHz to 18?GHz. 复合材料具有优异的介电性能,在1 kHz~18 GHz宽频范围内具有稳定的介电常数和介电损耗。
- 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。
- 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。
- 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。
- UWB's broad frequency range includes the ultralow frequencies the U.S.Navy uses to communicate with submerged submarines. UWB宽阔的频率范围包括了极低频率,美国海军将它用于与水中潜艇的通信。
- Analyse of Frequency Band in Acceleration Measurments during Ejection and Parachuting. 弹射和开伞过载测量中的频率分析。
- The method can directly detect the fault characteristic signals in low frequency band and achievefault diagnosis. 该方法直接检测故障的低频特征信号,完成故障诊断。
- A relatively restricted frequency band, normally used for a single purpose, or made available to a single user. 比较狭窄的频带,通常用于一种目的或一个用户。
- 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