查询词典 modulation

It proposes an improved Dynamic Frequency Selection scheme, in which traffic allocation unit and scheduling information delivery are selected by subchannel domain, modulation and coding domain, subcarrier domain.

提出了一种优化的动态频率选择方案，该方案是对资源分配单元和调度信息传递在子信道域、调制编码域和子载波域的三维选择。

Anterior cingulate cortex is an important part of the limbic system and the high-level center of brain, which not only receives all kinds of information from subcortex, but also is reliably activated by peripheral noxious stimulus, and has been a hotspot of pain exploration. Though the adequate data has already been collected about the ACC modulation of sensatory and emotional component of pain, the studies were almost confined to the aspect : how the ACC receive nociceptive information.

由于它是既接受来自皮层下多种信息的传入又可恒定地被外周伤害性刺激所激活的高级皮层，近年来已成为疼痛研究的热点区域。

Objective:To investigate the growth inhibition and apoptosis induction effect of vitamin E succinate on MCF7 human breast cancer cells and to analyze the modulation of Fas expression in this process.

目的：检测维生素E琥珀酸酯对MCF7乳腺癌细胞的增殖抑制和凋亡诱导作用，并分析凋亡诱导分子Fas表达的变化。

According to the summation Fourier series of three kinds of methods, the relationships among the harmonic performance, vertical offsets and modulation index are obtained in the paper.

根据线电压的谐波分量理论表达式，获得了载波之间竖直方向的交叠量、幅值调制度和多电平逆变器谐波性能指标之间的规律。

In radio communications, a frequency in a superheterodyne receiver or transmitter system that enables easier filtering, distribution, modulation, and demodulation of a signal

在无线电通信技术中，超外差接收机或发送机系统中使用的一种频率，能够方便地对信号进行滤波、分配、调制和解调。

Celestial radiation transmitted through the antenna to the receiving system, by the receiving system amplification, the receiving system is usually a superheterodyne receiver, but now they are mainly three categories: compensation type, modulation type, the relevant type.

天体辐射经天线传输到接收系统，由接收系统放大，接收系统通常是一具超外差式接收机，现在也主要有三类：补偿型，调制型，相关型。

A feasible method is introduced to code and decode(converting between linear code and A-law pulse-code-modulation code)in order to reduce the quantity of speech data,and to superpose speech signal.

目前，51单片机应用广泛、性价比高，它的位处理功能在语音信号处理中也有很大优势，很多产品研发人员希望以单片机为核心研制经济实惠的语音系统。

The set of the elementary functions is obtained by the successive matching of the signal local nature with the single prototype Gaussian function through regulating its variance, sweep rate, translation and modulation in an adaptive manner.

基函数集是由单一原型高斯函数通过自适应调节其方差、扫频率、时移和频移来匹配信号的局部时频特征而获得。

Comparing with other capacity regulation methods, it has a good modulation effect and can avoid additional energy consumption as well as many problems such as compressor sympathetic vibration, leakage etc. Therefore, it has a good future.

与其它容量调节方式相比，这种调节方式不产生附加能量损失，并且可以避免变频压缩机所存在的共振、密封不良等诸多问题，可以获得更好的调节效果，具有很好的应用前景。

A good modulation effect could be obtained through this method in comparison with other capacity regulation methods .To be specific, additional energy consumption besides many problems such as compressor sympathetic vibration, refrigerant leakage,ect. can be avoided .So it has a promising application future.

与其它容量调节方式相比，这种调节方式不产生附加能量损失，并且可以避免变频压缩机所存在的共振、密封不良等诸多问题，可以获得更好的调节效果，具有很好的应用前景。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。