查询词典 modulation

Modulation and demodulation, which is one of the most key techniques in communication, has been always an important aspect.

一个系统的通信质量，很大程度上依赖于所采用的调制方式。因此，对调制方式的研究，将直接决定通信系统质量的好坏[1，2]。

Modulation and demodulation, which is one of the most key techniques in communication, has been always an important aspect people research.

作为其关键技术之一的调制解调技术一直是人们研究的一个重要方向。

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。

This article analyzed eddy properties of fluids and optical fiber sensors of modulation uminous intensity, Utilize the micro-bending loss property and the result of interfering among many mould optic fibre modes of the optic fibers, have designed a kind of new-type flow of the flow and densimeter of measuring the rate of flow and density at the same time.

本文主要分析了流体的涡漩运动特性，结合强度调制光纤的传感原理，和光纤的微弯损耗特性和多模光纤模式间干涉的结果，设计了一种同时测量流体的流量和密度的新型流量、密度计。

The result of frequency response analysis shows that when the modulation frequency of incident radiation increases, the phenomenon that the response of detector lagging behind the variation of radiation becomes evident, the temperature variation range in pyroelectric thin film decreases, but the variation velocity increases, so the current resulting from pyroelectric effect increases.

频率响应分析表明：随着入射辐射调制频率的增大，可以观察到探测器响应的滞后现象越来越明显，热释电薄膜中的温度变化范围减小，但变化速率增大，因此探测器的热释电电流增大。

The output of electron acoustic signal in the ferroelectrics is calculated on the basis of their piezoelectric properties. The results show that the magnitude of electron acoustic signal not only related with beam currents, beam power and modulation frequency, but also with sample properties especially electric parameters such as dielectric constant and spontaneous polarization.

本文首次以典型的铁电BaTiO〓材料为试样，从其具有的压电性出发，推导了这类材料的电声信号理论表达式，结果表明电声信号的大小不仅与实验参数如入射电流、入射电子能量以及调制频率等有关。

With the development of digital signal processing, the number of modulation methods increases.

许多新的方法应用于该领域，本文对近年来这个领域的研究作了综合评述，讨论了其中存在的问题，并指出了今后的发展方向。

Modulation of lung inflammation by vessel dilator in a mouse model of allergic asthma.

本实验旨在评价血管扩张剂，另一种前心房利钠因子N末端利钠肽（氨基酸31－67）对小鼠过敏性哮喘模型中肺急性炎症的影响。

The leading products of the company is PDM1、3KW full solid state broadcasting transmitters, DAM10、25、50、100KW digital circulate modulate medium wave broadcasting transmitters, M2W10、50、100KW digital circulate medium wave broadcasting transmitters, 100W、300W、1、3、5KW full solid state frequency modulation dimensional sound broadcasting transmitters.

公司的主导产品为PDM1KW、3KW全固态广播发射机，DAM10、25、50、100KW数字循环调制中波广播发射机，M2W10、50、100KW数字幅相调制中波广播发射机，100W、300W、1、3、5KW全固态调频立体声广播发射机、远程监控系统以及发射机辅助产品等。

The ability to have a direct modulation is different from other laser diode laser an important characteristic.

4具有直接调制的能力是半导体激光器有别于其它激光器的一个重要特点。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。