查询词典 analog signals

Since the decimation of discrete time signals is similar to the sampling of continuous signals, it is also studied in the thesis.

鉴于对离散信号的抽取和对连续信号的采样非常相似，本文还把研究范围拓展到了对离散信号的抽取问题。

The method first analyses the wave decompound traffic data, sets up support vector machine model separately on basic signals and disturbing signals of different resolving rate, then compounds several forecasting results, finally the traffic forecasting result is obtained. With examples, the result shows that the model has relatively lower error rate and quite reliable.

首先对交通量数据进行小波分解，然后分别对基本信号和不同分辨率的干扰信号建立支持向量机模型，最后对多个预测结果进行合成，从而得到交通量的预测结果，并利用实例计算显示模型具有较低的误差，证明了该方法具有很好的可靠性。

Wiih rapidly developing of communication technology, the system and modulation manner of communication signals became more and more complicated and various, and circumstance of signals became increasing denseness.

近几十年来人们在通信信号的识别方面作了大量有益的探索，提出了很多新思路和新方法，但是这些方法都是基于固定的信噪比，没有涉及信噪比变化时的信号识别问题。

Results: 4 cases were geminoma, 3 cases were teratoma, 1 case was choriocarcinoma, 4 cases were glioma, 2 cases were meningiomas, pineoblstoma, neuroblastoma, dermoid cyst and arachnoid cyst each had one case. It maybe very difficult if we diagnosed only through MR signals. Due to the multitude origin of histology, we can diagnose through some special signals, such as adipose, cystic degeneration, hemorrhage and implant dissemination. We can also combined with clinical examination which is help to differential diagnosis.

结果：生殖细胞瘤4例，畸胎瘤3例，1例绒毛膜癌，胶质瘤4例，脑膜瘤2例，松果体母细胞瘤、神经母细胞瘤、皮样囊肿及蛛网膜囊肿各1例，仅通过MR信号较难诊断，由于肿瘤组织学来源多，可通过一些特殊信号如脂肪、囊变、出血、种植播散等，并结合临床检查来进行鉴别诊断。

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。

Although translator has turned from being a crystal ball by which the original culture can unrestrainedly penetrate to another crystal ball by which the target culture can freely traverse, the translator's personal embodiment, in the process of cognitive act, are still absent in translation studies. Translators are still subjects without body or simply disembodied subjects.

译者虽然由原语文化可以自由穿透的玻璃球变成了译语文化可以自由穿越的玻璃球，但译者认知过程中的个体体验在翻译研究中依然缺席，译者依然仅仅是一个没有躯体体验的主体。

Chillingly, he claimed our technology is 'not nearly as sophisticated' as theirs and "had they been hostile", he warned 'we would be been gone by now'.

令人毛骨悚然的，他声称我们的技术是'并不那么复杂，像他们一样，和"如果他们敌意"，他警告说，'我们将现在已经过去了。