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electric wave 電波。

electric welding

From each of them goes out its own voice , as inaudible as the streams of sound conveyed by electric waves beyond the range of hearing , and just as the touch of a button on our stereo will fill the room with music , so by opening one of these volumes , one can call into range a voice far distant in time and space , and hear it speaking , mind to mind , heart to heart 每本書可以傳播它的聲音,它聽不見,就象電波傳送的聲音流一樣聽不到,但象按下收音的按鈕,音樂充滿房間一樣,所以當打開一種聲音的書,你將進入且探尋在空間和時間上遙遠的聲音,用心真誠的去聆聽。

The main task of day - to - day management is to ensure what already built broadcasting station is normal move , the member that need to enter a pedestrian grooms , supervise build frequency of year of yearly check of system of computer room regulations , equipment , collection to take up cost , interference is investigated , electric wave is monitored wait for the job 日常治理的主要任務是保障已建電臺的正常運行,需進行人員培訓、監督建立機房規章制度、設備年檢、收取年度頻率占用費、干擾查處、電波監測等工作。

This text has counted the electric wave propagation path loss of street in one kind of typical rule range urban area , and reaches calculations data fairly with the measured data in the document . then calculate and analyze electric wave propagation ’ s characteristic in urban area . finally give an electric wave propagation prediction application example of column building model 本文最后計算了一種典型的規則排列得城市環境中街道得電波傳播路徑損耗,并與文獻中得實測及計算數據進行了比較,然后進一步對矩形、圓柱型建筑物城市小區電波傳播進行了分析計算。

The model of forecasting the db - lost in electric wave given in the article plays the very significant role in network optimization and also has the important reference value . it needs to be paid more research on in the future . at last , some problems that exist in the ipas network are concluded in detail by author 對于論文中提出的電波傳播損耗預測模型,在無線市話網絡優化工作中具有非常重要的指導意義和研究參考價值,更有待于深入探討,文章最后對無線市話網絡優化中存在的若干問題進行了歸納總結。

When activated by an built - in electric waves yanging from 2 to 25 ( microns ) in wavelength and 28 to 34 mw / sq . cm in intensity that coincide with the wavelengths and intensity of the electromagnetic waves released by a human body and are cosquently absorbed by the body ( so - called selective absorption ) 其內部所含元素可以通過電能轉換為熱能,當激發到一定溫度,便會產生一種具有不同波長和不同能量的綜合電磁波,這種被吸收的電磁波能增強人體的自身調節機制及免疫力,使癥狀迅速康復,提高機體抵抗力。

This article through installs the reactor with air core in the transformer substation transmission , to control the thunder electric wave amplitude and steepness in the transformer substation ; through over voltage on - line monitoring device testing , inquire into lightning protection of the reactor with air core 本文通過在變電站的輸電線路的出口處加裝空心電抗器,對通過輸電線路侵入變電站的雷電波的幅值和陡度進行抑制;并通過安裝過電壓在線監測裝置進行測試的方法,初步探討了空心電抗器防雷的作用。

From each of them goes out its own voice , as inaudible as the streams of sound conveyed by electric waves beyond the range of our hearing ; and just as the touch of button on our stereo will fill the room with music , so by opening one of these volumes , one can call into range a voice far distant in time and space , and hear it speaking , mind to mind , heart to heart 它們有自己的話語,如同電波傳送的聲音那樣不為人所覺;只要打開一本書,就如按下音響設備的電鈕能讓音樂充滿房間那樣,你能聽見從遙遠時空傳來的話語,讓那顆心靈對著你娓娓道來。

In this part , the two anterior chapters mainly discuss the various basic theories used by the designing for the propagation paths of the electric wave . the theories include the computation methods for the fade and the loss of various propagation paths and obstructions , the engineering estimation methods of the flat fading and frequency selected fading , the designing methods of space diversity and frequency diversity , etc . at the same time , the special designing method of the sea - across path is discussed in detail 本文首先闡述了微波中繼通信工程設計中的相關知識,其中前兩章主要論述了線路設計中所用到的種種理論基礎知識,包括對于各種路徑情況、障礙情況的衰落與損耗的不同計算方法,平衰落與選擇性衰落中斷率的估算方法,天線分集和頻率分集技術的理論知識和設計方法等等。

In studying the law of the wireless electric wave propagation , one can combine rt with fdtd , and take the advantages of each other . using the rt to compute the field except for the area to be computed by fdtd , and making the field as the fdtd ' s excition source , fdtd can compute the field in the small part , and can get many points field at one time , so it can provide the information for the designing installing and tuning wireless devices 對于室內無線電波傳播的研究,可以結合rt與fdtd ,使兩者取長補短,發揮各自的優勢,利用rt可以計算出(除將采用fdtd計算的區域以外)場,將該場作為fdtd的激勵,利用fdtd就可以計算出細微處的場,并可以一次精確計算出多個點的場,從而為無線設備的設計、安裝與調試提供可靠的信息。

Everything we absorb through our six senses will excite some thought within us , and most of the thoughts produced from the mundane world are low level . the low level thoughts within us will then get connected to the low - level beings around us . it s like electric waves 任何從外面從我們六根吸進來的六塵,都會激動出來一些念頭,多數從塵間的境界產出來的那些念頭,都是低等的,然后我們的低等念頭,就跟我們周圍的低等眾生接上線,像電波一樣,發出去就有人收,我們在這里收,他們在那里播出去,只要我們打開頻道,它就跑進去了。

Now . there is not a method alone can study the propagation characters completely and accurately . in the room one can use the ray - tracing to predict the electric wave ' s field , but the method is not very accurate in calculating the field in the very complex environment . fdtd method is a numerical method used very extensively . in the condition that the computer ' s resource is enough , it can compute the every point ' s field very accurately in the area to be calculated . however , the method is restricted by the computer ' s resource , the area that can be computed by it is very small 目前,沒有一種單獨的方法可以用來全面而準確地對室內的無線電波傳播特性進行研究。在室內可采用射線跟蹤的方法來預測電波傳播的情況,但對于細微復雜結構處的場的計算不太準確。而時域有限差分( fdtd )法是一種使用十分廣泛的電磁場計算方法,在計算機資源允許的條件下,可以精確的計算出計算區域中每個點的場。

In order to utilize the frquency resource adequately and increase the capacity of mobile communication system , the wireless electric wave propagation of existing mobile system always adopts the microcell structure . forecasting the path loss characteristic of electric wave accurately can provide the necessary condition for the layout and design of wireless network , at the same time it is a precondition for the research on the microcell mobile system . the methods of forecasting of wireless electric wave propagation can divide into two parts : one is pluse and respond , that is establish the empirical model based on experimental and statistical data ; the other is ray tracing method , that is establish the deterministic model based on theoretical analyse . the paper discuss the characteristic of wireless signal electric wave transmition in symmetrical atmosphere of earth , and introduce the common path loss transmition model in land mobile communication system , also point out the localization of these models based on experiential methods 而精確預測無線電波傳播路徑損耗特性,則為合理的微蜂窩無線網絡規劃、設計提供了必要條件,同時也是研究微蜂窩移動通信系統性能的前提。無線電波傳播預測的方法分為兩類:一是用沖激響應法,即根據實驗、統計所得數據建立經驗性傳播預測模型;另一種是用射線跟蹤方法,即依據理論分析來建立確定性的傳播預測模型。本文首先討論了在地球表面均勻大氣中的無線電波傳播的基本特性,介紹了陸地移動通信系統中常用的幾種電波傳播路徑損耗經驗性預測模型,并指出了這些經驗性傳播模型對于微蜂窩小區無線電波傳播特性研究的局限性。

This kind of product applies to elevators 、 hospitals 、 an intersection 、 factories etc . , avoiding any interference to the process of monitoring the image from any kind of furious electromagnetic signal and electric waves signal 本產品主要適用于電梯、醫院、路口、廠區等各種環境,防止監視視頻傳輸過程中受到各種強烈電磁信號及電波信號(如電機、馬達等大功率的瞬間啟動電流干擾等)對視頻信號的干擾。

With more and more people using the wireless devices , it is very necessary to predict the field strength in the room and study propagation characters of the wireless electric wave f therefore , it is very important to adopt exact method to study them 隨著室內無線電設備使用越來越廣泛,對室內的場進行預測,并對無線電波傳播特性進行研究是十分必要的,因此采用正確的方法是十分重要的。

Walk through a romantic season , so many romantic emotion , romantic mood , i know the rose contain language , the look in the eyes contain electric wave , filling the air the flavor of the love in air 走過了一個浪漫的季節,那么多浪漫的情緒,浪漫的心情,我知道玫瑰有語言,眼神有電波,空氣里彌漫著愛情的味道!

Otherwise , since the importance of electric wave propagation and anticipation model in wireless network design , the paper gives a further research using a single chapter 此外,鑒于電波傳播預測模型對無線網絡規劃的重要意義,論文用單獨一章對其進行了深入研究。

On this condition , the paper put forward a new electric wave transmition model in the microcell , which based on ray tracing method of virtual fountain tree 在總結前人工作的基礎上,本文提出了一種新的基于“虛擬源樹”射線跟蹤技術的微蜂窩小區的電波傳播模型。

The first chapter of the book says , “ we have not only sounds waves but light waves and heat waves and electric waves , of which more later 這本書的第一章說: “不僅有聲波;還有光波、熱波和電波;凡此種種下文還要予以充分論述。

In recently years , many thesis have been issued about the city ’ electric wave propagation in the famous inland or outer publication 近年來,在國內外著名刊物上都有不少有關城市小區電波傳播方面論文發表。