查询词典 wave propagation

Know to all, The refract wave exist an precondition, that is the bottom medium velocity is bigger than upper, then medium interface produce the refractive wave, if the medium exist the speed turn in reverse, and low speed in false bottom, the medium interface can not calculate.

众所周知，折射波存在的前提是下层介质的速度一定要大于上层介质的速度，这样才能在界面形成折射波，如果存在低速夹层和速度倒转，则利用折射波来求取表层结构难以进行。

He identified the beginning of agriculture and establishment of feudality as the first wave; industrial revolution and establishment of capitalism, the second; and technology, intellectual economy, post-industrial time, the third. He said the third wave would change the US and the world as a whole, and affect the development of human history.

1980年，世界著名的未来学家阿尔文·托夫勒在他的《第三次浪潮》一书中，对于人类经济社会发展的历史重新进行了界定：他把人类历史上开始发展农业、建立封建制度称为"第一次浪潮"，把工业革命、建立资本主义制度称为"第二次浪潮"，而现在世界正在经历着以知识经济为代表的"第三次浪潮"，它将彻底改变美国以至世界的一切，影响人类历史的发展。

The main function of Video Workshop is to convert video files from one format to another, extract single frames to image files, cut a part of file into new video file, merge two or more files in one, rip audio tracks from video files to mp3 or wave files, and mix audio files (mp3 or wave) into new video file.

主要职能是视频研讨会是转换视频文件格式从一个到另一个，提取单一的框架，以影像档案，削减的一部分，档案到新的视频文件，合并两个或两个以上的文件在一，撷取音轨从视频文件到MP3或波档案，并混合音频文件（ MP3或波）到新的视频文件。

The lead plane both can show lively wave filmstrip and can broadcast gentle beautiful music or a little natural sound, for instance , sea wave , forest brook in rain, heartbeat sound having mother more.

主机既可以放映活波的幻灯片也可以播放柔美的乐曲或一些自然声音，比如海浪、雨中的森林小溪，更有妈妈的心跳声音。

Auto-adaptive wave filter theory and technology is the main content of statics and non-stable random signal processing, which has the best performance of VINA and KARMAN wave filter, and no base knowledge or initial requirement is required. It is adapting outside environment by self-studing.

自适应滤波理论和技术是统计信号处理和非平稳随机信号处理的主要内容，它具有维纳滤波和卡尔曼滤波的最佳滤波性能，但不需要先验知识的初始条件，它是通过自学习来适应外部自然随机环境的。

Auto-adaptive wave filter theory and technology is the main content of statics and non-stable radom signal processing,which has the best performance of VINA and KARMAN wave filter,and no base knoledge or initial requirement is required. It is adapting outside environment by self-studing.

自适应滤波理论和技术是统计信号处理和非平稳随机信号处理的主要内容，它具有维纳滤波和卡尔曼滤波的最佳滤波性能，但不需要先验知识的初始条件，它是通过自学习来适应外部自然随机环境的。

In ocean wave simulation,a view-dependent ocean wave mesh model is given by experiment analysis for two common mesh models,which are based on random sample points and based on fixed sample points.

在海浪模拟中，通过对两种常用网格化模型(基于随机采样点的网格化和基于固定采样点的网格化)的实验分析，给出了一种视点相关的海浪网格模型。

A typical hot money speculating, wave after wave, like flower-like drumming, the main short-term.

一个典型的热钱投机，后浪，像花一样鼓波，主要是短期的。

First, mathematic description of FOG's modulation signal was analyzed, and then three methods for producing modulation signal with adjustable amplitude were discussed, which are direct wave table method, multiplicative amplitude adjusting method and two-level wave table method. Their advantage and disadvantage were analyzed.

首先对光纤陀螺调制信号的数学描述进行了分析，在此基础上提出了三种幅度可调调制信号的产生方法，即直接波表法、乘法调幅法、两级波表法，并分析了三种方法各自的优缺点。

First,mathematic description of FOG's modulation signal was analyzed,and then three methods for producing modulation signal with adjustable amplitude were discussed,which are direct wave table method,multiplicative amplitude adjusting method and two-level wave table method.

首先对光纤陀螺调制信号的数学描述进行了分析，在此基础上提出了三种幅度可调调制信号的产生方法，即直接波表法、乘法调幅法、两级波表法，并分析了三种方法各自的优缺点。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。