作为信号的

An analog-to-digital converter, as an interface between analog signal and digital signal, especially is demanded in video and wireless communication field.

高性能模数转换器作为模拟信号与数字信号的桥梁，尤其在图形、视频以及无线通讯等领域的需求日益增强。

A detection method based on phase correlation uses a phase difference as the statistical quantum to detect double frequency carrier signal for BPSK DS/SS signals, it has the advantage of the rapid detection and can work well under low SNR condition.

基于相位相关的检测方法把相位差累积量作为检验统计量，通过检测载波二倍频信号来实现对BPSK DS/SS信号的检测，具有检测迅速并能够在低信噪比条件下工作的优点。

This thesis contributes to geometry compression in the following aspects: Proposes a method of progressive spherical mesh parameterization based on local parameterization by directly projecting the deleted vertices to its neighborhood. Based on spherical mesh paramterization, an adaptive subdivision remeshing method by progressivly redistributing of sampling points is proposed, by this means, the main geometry information of the original mesh can be captured with only a small amount of samples, it can also be used in mesh simplification. By regarding attributes binded on mesh vertices as geometry signals and transferring them onto a uint sphere by means of spherical mesh parameterization, meshes with different attributes are compressed with spherical wavelet successfully with high compression rate. As a kind of lossy geometry compression technique, two mesh simplification algorthimes are also presented in this thesis.

归纳起来，本文的主要贡献有：提出了以直接投影局部参数化方法为基础的网格累进球面参数化方法；在网格球面参数化方法的基础之上，提出了一种基于累进优化布点方案的网格细分采样方法，该方法可以用很少的采样点就可以捕获到网格的主要特征，因此我们也将其用于后面的网格简化工作当中；通过将网格顶点上定义的各种属性看成几何信号，并以网格球面参数化为手段将几何信号迁移到单位球面上，从而成功地实现了用球面小波对各种几何信号的压缩；作为一种有损压缩方法，本文还提出了基于统一距离的网格简化算法和基于重采样的网格简化算法。

The hardware used for analog-to-digital conversion of video signals is called a frame grabber.

作为电视的信号类比到转变为传送信号的硬件叫做一个体系的核心。

Brillview Technology, a leader in Chinese image processing sector, has created pure hardware image processing techniques, which are not only innovative and originative but also help solve various challenges in image processing applications such as multiple RGB signals display, free overlapping of different types of signals, acquisition and output of ultra-high resolution signals, computer collapse and virus corruption, etc. This enterprise advances Chinese image processing technology up to an international advanced level and opens a new era of display control.

作为中国市场图像处理领域的领导者，博睿科技独创的纯硬件的图像处理技术，极具创新和想象力，解决了图像处理领域RGB多信号显示，各种信号类型之间的自由叠加，超高分辨率信号的采集和输出，死机和病毒困扰等诸多瓶颈，带领国内的图像处理技术进入国际先进水平，开创了显示控制的新纪元。

The permanent magnets are now mouthed at the exterior of the high-pressure vessel and are no longer in contact with the fluid sample. So this construction of equipment decreases the contamination of each other. Concerning the temperature-control system, the present instrument employs one non-vibrating new technology. In the high pressure systems, a simple and fast high-pressure pump was used to generate hydraulic pressure. This equipment is more easy to control than the literature\'s methods. A digital lock-in amplifier has been used as sinusoidal current function generator and the induced signal detector.

本文对振动丝粘度密度仪在设计方案上进行了大量改进，把磁体从高压容器的内部移植到容器的外部，提高了容器的化学适应性，采用了无振动的恒温新技术，利用了方便快捷的加压方式，极大的方便了实验的进行，减少了实验的工作量，用数字Lock-in锁相放大器作为驱动信号发生器和诱导信号检测器，设备既简单又极大地提高了信号的检测灵敏度。

A 130mm flat-faced cathode-ray tube is used to display the discharges which...

用130mm的平面阴极射线管作为放电脉冲信号的显示元件，放电信号叠加在椭圆时基上，观察方便。

In the paper, by describing the inside and outside widening on curve track scientifically, a new method for computing the co-ordinate location where the fouling point or signal will be installed is presented based on calculating the structure gauge limit in favour of developing the CARYD system, and a new graphical method yielded from the the new principle makes it truely possible for using simple tools to determine the position manully.

通过对曲线内外加宽的几何描述，以建筑接近限界作为计算的最终依据，新的适合于计算机辅助设计的警冲标、信号机的计算方法保证了警冲标、信号机位置的确定、到发线有效长的计算以及咽喉区之间的连接能够自动进行。除此之外，按照新的原理和方法，论文中还提出了一种适合于采用简单绘图工具便可实现警冲标、信号机位置确定的新的图解方法。

It put forwarded the concept of comfortable natural wind at first and confirmed the types of comfortable natural wind signal. Meanwhile, it decided to use the preferential-selecting natural wind signal as the control signal.

研究中首先提出了舒适性自然风的概念，确定了舒适性自然风采样信号的类型，并提出用优选自然风样本作为随机自然风控制信号。

Based on the theory, an RC ploy-phase oscillator is proposed as an example, from which the condition for maintaining stable oscillation is also deduced.

此外，作为多相位振荡信号的一个特例，RF正交正弦信号被广泛应用在调制、检测和镜像抑制等方面[2，3]。

Further more, the simplified analysis method on stressed-skin effect of corrugated steel sheet is also discussed in detail.

此外还比较详细地探讨了蒙皮效应的简化分析方法。

If I had known her telephone number,I would have called her.

要是我知道她的电话号码，我就打电话给她了。