查询词典 signal

An RF signal is sent to the nearest base station, which sends the signal to a digital telephone exchange and on to the main telephone network.

一个RF信号发送到一个最近的基站，它把信号发送到数字电话交换，到主要电话网络。

A method of keying a radio carrier for transmitting binary data or teletypewriter signals, which consists of shifting the carrier frequency in one direction for a marking signal and in the opposite direction for a spacing signal.

对无线载波频率进行键控用于传输二进制数据或电传打字机信号的一种方法。这种方法是在某一方向上对载波频率进行漂移用于传输标记信号，而在相反方向上对载波频率进行漂移用于传输空格信号。

This instrument provides not only local pressures with indication but also continual output of 4～20mA direct current signal with linear relationship with its testee pressure signal.

带上隔膜部分后，可测量粘度大、有腐蚀性介质的压力。本仪表除就地进行压力指示外，还连续输出与被测压力信号成线性的4～20mA或0-10mA直流信号。

As a result, retransmission signal error rate characteristics are improved on the receiving side by despreading this code division multiplexed signal using the same plurality of spreading codes as on the transmitting side, and selecting or combining the despreading results with the greatest correlation power thereamong.

其结果，在接收端使用和在发送端相同的多个扩频码解扩该码分复用信号，选择其中相关功率最大的解扩结果或者是加以合成就能够提高重发信号的差错率特性。

This project was established based on the first cooperative development of optical in situ real time detecting technique probing the atomic scale layer-by-layer epitaxy growth of oxide film. Over the last three years, we have given full play to the advantages and characteristics of both sides and have finished the assumptions and plans of this subject satisfactorily. 1. In Institute of Physics, we set up advanced oblique-incidence reflectivity difference equipment and wrote one data acquisition procedure that made the simultaneous detection of optical signal and RHEED signal into reality. 2. The first observation of sustained oscillations over hundreds of monolayers in both real and imaginary signals during the epitaxy growth of SrNb0.1Ti0.9O3 on SrTiO3 substrate in LMBE testifies that oblique-incidence is an excellent method to detect and monitor film epitaxy growth real time. 3. For the first time, we verify that oblique-incidence reflectivity difference method can be used to monitor the layer-by-layer growth mode during continuous growth through the correspondence between optical signals to atomic or molecular step edge density on the growth surface. 4. Phenomenological analysis shows that optical signals comprise three parts, the first is proportional to the average thickness of the film and depends on the bulk phase dielectric response; the second is proportional to the coverage of terraces and depends on the dielectric response of atoms or unit cells in the terrace; the third is proportional to the coverage of step edges and depends on the effective dielectric response of atoms or unit cells at step edges. This makes oblique-incident reflectivity difference technique a quantitative macroscopic method to monitor film growth.

中文摘要：本课题是在合作首次发展了氧化物薄膜原子尺度层状外延生长光学原位实时探测方法的基础上立项的，三年来，我们充分发挥双方的优势和特点，圆满完成了课题的设想和计划。1、在物理所建立了一套先进的光反射差法装置，编写了计算机系统的数据采集程序，实现了两路光学信号和RHEED数据的同步采集和显示。2、用激光分子束外延在SrTiO3基底上生长SrNb0.1Ti0.9O3薄膜，首次观测到连续外延几百个原胞层，周期振荡的光反射差实部和虚部信号，证明了光反射差法是一种能原位实时探测与监控薄膜层状外延生长的好方法。3、首次验证了通过对生长表面原子或分子台阶密度的响应，光反射差法可用于原位实时监测在连续生长条件下薄膜的层式生长模式。4、通过唯象理论的研究，证明光反射差信号由三项组成，第一项只与薄膜的平均厚度和宏观光学电介质常数有关；第二项与分子台阶面覆盖度和台阶面上分子层的光学电介质常数有关；第三项与台阶边缘的覆盖度成正比，并和在台阶边缘的分子的有效光学介电常数有关。

In order to improve ability of anti-jamming, nowadays output of many measure-control systems' sensor is three thready difference signal and differ voltage range. Commonly, this signal is transacted by complex circuit , then it is collected. In this way, hardware cost of system is increased and precision of system is reduced.

现在很多测控系统为了提高抗干扰的能力，传感器输出信号多为3线制的差分信号，而且电压范围也不同，通常采用的方法是把差分信号通过复杂电路进行处理后再进行数据采集，这样不仅增加了硬件成本，还使系统的精度降低。

By the theoretical analysis and computer simulation,several characteristics of radar signal have been discussed,such as ambiguity graph,distance resolution,velocity resolution and low probability of intercept performance.The simulations show that the hybrid signal has a "thumbtack" ambiguity graph and a better performance for the distance resolution and the velocity resolution.

通过理论分析和计算机仿真，给出信号的模糊图、距离分辨力、速度分辨力以及低截获概率(LPI，Low Probability of Intercept)特性分析，结果表明该信号波形具有近似"图钉"型的模糊图和良好的距离及速度分辨力。

The content of time signal protocol of the four important time signal transmitters in the world is researched.

通过对发射协议的解读，了解了时间信号的详细编码形式，从而为时间信号的解码提供了相对应的算法。

Three methods are applied to compute the time delay between differential signal and health signal.

详细介绍了这3种时间延迟估计方法的原理以及损伤定位结果的分析。

This is on digital signal processing toolbox, which contains a large number of digital signal processing procedures of Matlab.

这是关于数字信号处理的工具箱，里面包含了大量的数字信号处理的matlab程序。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。