查询词典 class frequency

Matlab Toolbox time-frequency analysis, with short-time Fourier transform, Cohen category bilinear time-frequency processing function, Affine category bilinear time-frequency processing function, Fuzzy function and the other handling functions such as source, it should be very useful.

Matlab 时频分析工具箱，含短时傅立叶变换、Cohen类双线性时频处理函数、Affine类双线性时频处理函数、模糊函数和其他处理函数等源码，应该很有用。

The company's products--- RFM-S intermediate frequency, high frequency, ultrasonic frequency series and the alternating and direct filter capacitor, receive high praise after the customer use them, and we also receive a consistent approval product quality.

公司所生产的RFM-S中频、高频、超音频系列及交、直流滤波电容器，在客户使用后颇受好评，产品质量得到一致认可。

The machine's control system adopts a delta DVP14SS11R and a module of DVP16SP11R (16 I/O expansion module).It Composes 40 PLC control section. It adopts a module of DVP02DA-S (2 group simulation quantity output module) to control main frequency conversion and fluctuation frequency conversion actuation. The machine also adopts a delta TP04-AS2 Text display monitor carrying on the system external input with to reel thread the data monitoring. Use plate alternating current machine driver VFD-B-P series frequency changer controlmasterdrive electrical machinery and ring board electrical machinery.

该机型整个控制系统采用了一套台达DVP14SS11R控制单元，配DVP16SP11R扩展模块（16点I/O扩展），来组成40点PLC控制部分，采用一块DVP02DA-S（2路模拟量输出模块）分别控制主变频和升降变频驱动，同时采用台达TP04-AS2文本显示屏进行系统外部输入与纺纱数据的监控，使用台达VFD-B-P系列变频器控制主传动电机和钢领板电机。

The machine's control system adopts a delta DVP14SS11R and a module of DVP16SP11R (16 I/O expansion module).It Composes 40 PLC control section. It adopts a module of DVP02DA-S (2 group simulation quantity output module) to control main frequency conversion and fluctuation frequency conversion actuation. The machine also adopts a delta TP04-AS2 Text display monitor carrying on the system external input with to reel thread the data monitoring. Use plate alternating current machine driver VFD-B-P series frequency changer control master drive electrical machinery and ring board electrical machinery.

该机型整个控制系统采用了一套台达DVP14SS11R控制单元，配DVP16SP11R扩展模块(16点I/O扩展)，来组成40点PLC控制部分，采用一块DVP02DA-S(2路模拟量输出模块)分别控制主变频和升降变频驱动，同时采用台达TP04-AS2文本显示屏进行系统外部输入与纺纱数据的监控，使用台达VFD-B-P系列变频器控制主传动电机和钢领板电机。

It Composes 40 PLC control section. It adopts a module of DVP02DA-S (2 group simulation quantity output module) to control main frequency conversion and fluctuation frequency conversion actuation. The machine also adopts a delta TP04-AS2 Text display monitor carrying on the system external input with to reel thread the data monitoring. Use plate alternating current machine driver VFD-B-P series frequency changer control master drive electrical machinery and ring board electrical machinery.

该机型整个控制系统采用了一套台达DVP14SS11R控制单元，配DVP16SP11R扩展模块（16点I/O扩展），来组成40点PLC控制部分，采用一块DVP02DA-S（2路模拟量输出模块）分别控制主变频和升降变频驱动，同时采用台达TP04-AS2文本显示屏进行系统外部输入与纺纱数据的监控，使用台达VFD-B-P系列变频器控制主传动电机和钢领板电机。

According to the importance of frequen-cy in power system operation,the authors tested andcalculated the frequency attenuation time constant Tfand the static load frequency coefficient KL,whichcharacterinze the frequency variation of power system.

根据电网频率运行的要求，对表征电网频率特性的频率衰减时间常数Tf、静态负荷频率调节系数KL进行了试验研究和理论分析计算。

The receiver's high-current capability enables it to effortlessly drive even difficult loudspeaker loads, while ultrawide bandwidth provides far superior phase linearity, lower distortion, greater high-frequency headroom, and more accurate frequency response in the audible frequency range.

接收器的高电流能力，使它能够毫不费力地驱动扬声器甚至难以负荷，同时提供超带宽远远优于阶段线性度，低失真，更多的高频率余量，以及更准确的频率响应的发声频率范围。

The transmit part adopts the phase-locked loop pattern of frequency synthesizing technology and uses the MC145152 and MC12022 chips to compose the phase-locked loop.It locks the frequency of the carrier-wave at 35MHz.The stabilization of the carrier-wave can be 4×10-5,the accuracy can be 3×10-5.The frequency modulation and the confection of the carrier-wave are realized by the capacity-changing diode V149 and the integration voltage-control oscillator MC1648 chip.The end power amplifier uses the audion 2SC1970 to make it work in the third magnifying state,it improves the efficiency of the magnifier and the power of the output reaches the design demand.

发射部分采用锁相环式频率合成器技术， MC145152和MC12022芯片组成锁相环，将载波频率精确锁定在35MHz，输出载波的稳定度达到4×10-5，准确度达到3×10-5，由变容二极管V149和集成压控振荡器芯片MC1648实现对载波的调频调制；末级功放选用三极管2SC1970，使其工作在丙类放大状态，提高了放大器的效率，输出功率达到设计要求。

Fast Fourier transformation and autoregressive model estimation, are the most common methods used in the frequency domain analysis. The fluctuation in the highfrequency bands are mediated by parasympathetic control, whereas the fluctuation in the low frequency bands are mediated by both sympathetic and parasympathetic nervous systems. The origin of the fluctuation in the very low and ultra low frequency ranges are less obvious.

频域分析法一般是利用快速傅位叶转换或自动回规模型估计法，高频处的变异是由副交感神经系统调控，低频处的变异则是由副交感神经系统共同调控，至於极低频处与超低频处的变异，其原因尚待厘清。

This frequency stabilization system is a self-adaptive thermal compensated frequency stabilization system, which is based on 80C196 single-chip-processor and uses the beat frequency lock as the criterion.

通过该系统的稳频，激光器的拍频稳定度达到1.05%，由于进一步的测试设备正在采购中，光频的稳定度和复现性尚未测量。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。