查询词典 modulation

Our group started the experimental test of the photon rest mass in 2000, and presented a scheme of the modulation method with the precise torsion balance.

我们实验室于2000年开始进行光子静止质量的实验检验，并提出了扭秤调制法检验光子静止质量的实验方案。

Objective To study the modulation mechanism of naphthoquinones on ryanodine receptor in sarcoplasmic reticulum.

目的 研究萘醌-钙通道蛋白的作用机制。

This invention discloses a data retransfer method based on bit conversion which is to exchange positions forming bits, according to selected exchange way before quadrature amplitude modulation to each retransferred data.

本发明公开了一种基于比特变换的数据重传方法，该方法的关键是在每次重传数据进行正交振幅调制之前，对数据内各组成比特的位置按照选定的变换方式进行调换；该方法还进一步包括：a。

A new type of displacement sensor based on the principle of collimated beam reflective intensity modulation is presented,which is composed of graded-index lenses and some kind of reflective rhombic mirror.

设计了一种由GRIN透镜和菱形光闸反射体构成的光强度调制的垂直位移光纤传感器。

The relationship between noise figure and modulation efficiency,the loss of the fiber,as well as RIN is simulated.

还建立了链路频响的模型，推导出固有增益与频率关系的表达式，分析仿真了频率对链路固有增益和噪声系数的影响，并与实验结果进行了比较。

The pump eliminates the effect of channel-length modulation and makes the charging and discharging currents match perfectly in a wide output range to minimize the ripple of the control voltage.

该电荷泵结构可以很好地克服沟道长度调制效应的影响，使充放电电流在宽输出电压范围内实现精确匹配，从而使频率综合器的压控电压纹波很小。

AT89C51 single-chip microcomputer is used as the test and control core of the intelligent robot in this design,which detects the black line and barrier on the surface of road with infrared photoelectric sensor,and detects iron piece beneath the surface of road with metal sensor,and measures range with photoelectric yard measure,tests and judges the garage position with photoresistor,and also dynamically controls rotating direction and speed of motor by PWM(Pulse-Width Modulation) technique.

本设计以AT89C51单片机作为智能机器人的检测和控制核心，采用红外光电传感器检测路面黑线及障碍物，使用金属传感器检测路面下金属铁片，应用光电码盘测距，用光敏电阻检测、判断车库位置，利用PWM技术动态控制电动机的转动方向和转速。

Interestingly, this internal process does not roughen theinterfaces and keeps modulation structure of the multilayer well.

非晶合金的出现不但没有增加界面粗糙度，还很好地保持了多层膜的调制周期结构。

Features of modulation and of phonetic modification play a great part in many syntactic constructions;they are known as sandhi.

12.4.Features调制和语音的变更是在许多句法结构；他们是众所周知的。

Focus on the installation and modulation, this article mainly introduces the factors and debugging methods in the process of site selection and installation of satellitic ground receiving antenna, as well as some experiences accumulated from the practice of village-to-village connection projects.

重点介绍卫星地面接收天线的安装与调试过程中，卫星地面接收天线的选址所要考虑的因素与调试方法，同时介绍在村村通工程中总结的一些经验。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。