查询词典 signals

Circuit principles, analogue circuit, digit circuit which laid me a solid foundation of circuit for the study of communication; the study of electronic circuit of communication provided me with the working principles of analog communication system; the study on communication theory made me grasp the working methods of digital communication; the study on electromagnetic field, electromagnetic wave and aerial let me know that how signals travel through signal paths and how to apply signal and linear system, random signal and system to the research of noise's impact on signals

学习了电路原理、模拟电路、数字电路打下了学习通信的电路基础；学习了通信电子线路掌握了模拟通信系统的工作原理；学习了通信原理掌握了数字通信的工作方法；学习了电磁场与电磁波、微波与天线了解了信号如何在信道中传输；学习了信号与线性系统和随机信号与系统来研究噪声对信号的影响。

For every ULA, the wide-band signals are sampled in spatial and temporal, then 2-D discrete Fourier transform is carried out. A projection operation on 2-D representation of wide-band signals is applied in the spatial-temporal frequency domain. The direction cosine relative to the ULA axes is estimated by MUSIC algorithm.

该方法采用3个共面的均匀线阵，每一均匀线阵对宽带信号空间采样，然后进行空时二维DFT变换，在空时频率域对宽带信号进行投影变换，用MUSIC算法实现宽带来波信号方向余弦的估计。

The discrete output signals represent the state of discrete input signals at the wireless controller unit.

离散输出信号表示来自无线控制器单元离散输入信号的状态。

Then we re-sampling all signals defined on the surface of the original triangle mesh at the vertices of the spherical subdivision mesh and get a set of discrete geometry signals with subdivision topology which can be compressed by using spherical wavelet.

于是，在参数域内位于细分网格顶点处对定义在参数网格表面上的各种几何信号进行重采样，可得到新的具有细分结构的几何信号近似表示原始几何信号，以此满足球面细分小波对处理对象的细分结构要求，从而使得用球面细分小波对几何信号进行压缩得以实现。

The system achieves a sampling rate of 800Msps, and converts the high speed LVDS signals to low speed LVTTL signals using FPGA. And the FPGA implements the amplitude discrimination and obtains time information. Then FPGA sends the data to the TELL1 readout board.

该系统最高可达800M的采样率，通过FPGA进行电路控制，实现数据的串并转换、数据缓存、幅度甄别与时间信息的获取等功能，最后数据通过TELL1接口电路连接至以太网，用计算机进行读取与分析。

Compared to that of two-arm PCL18–DBAS (Figure 1a), the NMR spectrum of the mixture revealed that characteristic methylene proton signals of DBAS, which initially overlapped with signals corresponding to the PCL main chains, shifted downfield to d=4.5–4.7 ppm upon complexation (Figure 1c).

相比于二臂PCL18-DBAS（图1a），此混合物的核磁共振谱揭示，DBAS的特性亚甲基质子信号，他们一开始是与相应于PCL主链的信号重叠的，而在络合作用下则向下面漂移到δ＝4.5～4.7ppm（图1c）。

Finally,about the boards"design in the engineering process,some skills of the traces and placement of the signals between controller and the DIMM(Dual In-line Memory Module) socket are analysised in particular. In addition,DDR chip"s power consumption and the signals timing margin have been discussed.

本文最后还对DDR存储器应用所涉及到的工程化问题进行研究，深入分析了PCB设计中DDR SDRAM的电气特性及存储控制器和DIMM(Dual In-line MemoryModule，双列直插式存储器模块)条的布局布线问题，另外也进行了相关功耗的计算和信号时序容限的计算。

The proposed method is verified by computer-simulating with biological signals such as clinical electroencephalograph signal and other kind of signals.

通过脑电信号和其他信号的计算机仿真和实验结果表明了算法的有效性。

Thermal power engineering, Multiple Radiant Energy Signals, Integral Radiant Energy Signals, Genetic Algorithm, information fusion

热能动力工程，多层辐射能信号，总辐射能信号，遗传算法，信息融合

By re-constructing the system, the residual error dynamic characteristics of unknown input and fault signals including unknown disturbances and modelling error are obtained. The energy norm indexes of disturbance and fault signals of residual error are selected separately to reflect the restraint of disturbance and the sensitivity of faults, and the design of fault detection observer is described as an optimization problem.

通过对系统进行重构，获取了包括未知扰动、建模误差等未知输入信号和故障信号的残差动态特性，分别选取残差的扰动信号和故障信号的能量范数指标来体现其对扰动的抑制作用和对故障的灵敏性，并将故障检测观测器的设计描述为一个优化问题。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。