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maser

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maser n.〔縮略語〕(microwave amplificat...

n. 〔縮略語〕(microwave amplification by stimulated emission of radiation) 脈澤，微波激射；微波激射器；受激輻射微波放大器。 “acoustic maser“ 中文翻譯：   聲脈塞; 聲脈澤“ammonia maser“ 中文翻譯：   氨分子微波激射器; 氨脈塞; 氨微波激射器氨脈澤“ammonic maser“ 中文翻譯：   氨鎂射“astronomical maser“ 中文翻譯：   天體脈澤; 天文脈澤“astrophysical maser“ 中文翻譯：   天體脈澤; 天文脈澤“beam maser“ 中文翻譯：   射束量子放大器; 射束脈塞; 束微波激射“cavity maser“ 中文翻譯：   共振腔脈澤; 空腔脈澤“celestial maser“ 中文翻譯：   天體微波激射源“circulator maser“ 中文翻譯：   循環器脈塞“cooled maser“ 中文翻譯：   冷卻脈塞; 冷卻式脈澤; 冷卻微波激射器“cosmic maser“ 中文翻譯：   宇宙脈澤; 宇宙微波激射“crystal maser“ 中文翻譯：   晶體脈澤; 晶體微波激射器“cw maser“ 中文翻譯：   連續微波激射器“cyclotron maser“ 中文翻譯：   回旋加速脈澤; 回旋脈塞; 回旋微波激射器; 回漩脈沖“garnet maser“ 中文翻譯：   石榴石光激射器“gas maser“ 中文翻譯：   氣微射“gyrotron maser“ 中文翻譯：   陀螺振子微波激射器“helium maser“ 中文翻譯：   氦氖脈塞“hydrogen maser“ 中文翻譯：   氫微波激射器氫脈澤“hydroxyl maser“ 中文翻譯：   羥基微波激射“infrared maser“ 中文翻譯：   紅外激射器“interstellar maser“ 中文翻譯：   宇宙脈澤“inverse maser“ 中文翻譯：   逆微波激射“maser action“ 中文翻譯：   微波激射作用“masepe pulau“ 中文翻譯：   馬塞佩島“maser amplification“ 中文翻譯：   脈澤放大

maseru

Bing high power resources of millimeter - wave radiation , based on electron cyclotron maser , gyrotron has been pay much respect in the world for vast applications in many areas such as plasama calefaction , linear accelerators , millimeter wave radar , communications , electronic countermeasure and so forth . prof . liu shenggang began the research on electron cyclotron maser , and later , the group leaded by prof . li hongfu has done much research work on gyrotron also , , and later , they have began the research on a kind of gyrotron amplifier - - - - - - gyroklystron 回旋脈塞器件? ?回旋管作為大功率毫米波源，在等離子體加熱、線性加速器、雷達、通信及電子對抗等領域有著廣泛的應用前景，因此受到了國際上的廣泛重視，特別是近三十年來，回旋管得到了快速的發展，并成為了研究的熱門方向。

In 1958 , professor townes and dr . a . l . schawlow showed theoretically that masers could be made to operate in the optical and infrared region and this work resulted in their joint paper on optical and infrared masers , or lasers ( light amplification by stimulated emission of radiation ) 一九五八年，湯斯教授和邵盧博士（ arthurl . schawlow ）在理論上證明maser在可見光和紅外線的范圍亦可運作，并共同發表關于可見光和紅外線激射放大器，亦即laser （ lightamplificationbysimulatedemissionofradiation ）的論文。

At home , in the later of 1970s , prof . liu shenggang began the research on electron cyclotron maser , and later , the group leaded by prof . li hongfu has done much research work on gyrotron also , and successfully developed a first ka band third harmonic gyrotron oscillator with a permanent magnet system . and later , they have began the research on a kind of gyrotron amplifier - gyroklystron 在國內，中國電子科技大學在70年代后期，劉盛綱院士開辟了回旋脈塞器件的研究方向，以后李宏福教授帶領下的課題組也對回旋管進行了大量研究工作，并在“九?五”期間，成功地研制出了世界上第一支8mm三次諧波永磁包裝回旋管。

In order to better understand the excited mechanism of masers , we have studied the time variability of 22 ghz h2o masers in ggd25 , an outburst with the time scales of 4 day was detected . the time variation was probably caused by a collsion pump which led to changes in the pump input 為了更好地理解脈澤的產生機制以及脈澤和恒星形成區的一些典型現象，如它們所聯系的遠紅外源之間的關系，我們研究了22ghzh _ 2o脈澤源的時變以及所有已知的6 . 7ghz甲醇脈澤源的統計性質。

In the control system , ac inverters , dc rectifiers , remote distributed i / o , servo positioning controller , and touch panel form the dp slaves in the site field to realize the drive and control ; a siemens s7 - 300 plc , which acts as a dp maser , is used to harmonize the work among these dp slaves via fieldbus communication ; a ipc is used to display parameters , deal with alarm information , manage recipe , print report forms 控制系統以交流變頻器、直流調速器、遠程分布式i o 、伺服位置控制器、觸摸屏等構成現場底層dp從站，實現各傳動點的驅動以及測控信息處理的現場化；以s7 - 300plc為dp主站，通過與各從站的總線通訊實現各從站工作的高度協調一致；以ipc為操作站，實現數據顯示、報警處理、配方管理、報表打印等功能。

The paper did scrupulous discussion and investigation on the interaction between electron beam and standing wave field in the gyroklystron , which is typical in the electron cyclotron maser which action rf system is resonant cavity . the main works of this dissertation are listed as following : first , solving field in absorbing material and field matching method were used to derive the dispersion equation in waveguides and field matching formulas of hybrid modes in an abrupt cavity with absorber . based on the theoretical analysis , numerical simulations of the cavities in gyroklystron were done 主要工作有:一、采用吸收介質分區求解及場匹配的方法推導出含有吸收層的色散方程,單側加入吸收介質及兩側均加入吸收介質兩種突變結構混合模場的匹配方程,在理論分析的基礎上,通過相關的模擬軟件,建立了回旋速調管介質加載中間腔的計算模型,對回旋速調管中間腔進行了數值模擬,并給出了主要的計算結果。

3 . in order to show the fact that the - licrowave modulates the background plasma density and the density grating influences the propagation of the microwave in return , the dispersion relation of the dielectric cerenkov maser filled with plasma grating is derived when the modulation parameter is varied 三、為了反映等離子體被微波場調制從而形成密度周期性分布的等離子體柵，反過來影響電磁波的傳播這一物理事實，在調制系數變化的情況下，從等離子體柵的等效模型出發，推導了等離子體柵填充的介質cerenkov脈塞的色散方程。

Being high power resources of millimeter - wave radiation , based on electron cyclotron maser , gyrotron has been pay much respect in the world for vast applications in many areas such as plasma heating , linear accelerators , millimeter wave radar , communications , electronic countermeasure and so forth . specifically in twenty years later , there was much developments on gyrotron 回旋脈塞器件? ?回旋管作為大功率毫米波源，在等離子體加熱、線性加速器、雷達、通信及電子對抗等領域有著廣泛的應用前景，由此受到了國際上的高度重視，特別是近二十年來，回旋管得到了快速的發展，并成為研究的熱門方向。

To search for high - velocity molecular emission toward massive star formation regions , and to study the connections between h2o masers , iras objects and outflow properties , we carried out a co observation for a h2o maser sample . we found that most of the objects have excess high velocity emission produced by outflows ; we find a significant correlation between co line full widths and iras luminosities . the widths are proportional to the iras luminosities 通過在大質量恒星形成區搜尋高速分子輻射，并且研究它們與星際h _ 2o脈澤源和所聯系的紅外源之間的關系，我們發現絕大多數源都存在著氣體的高速運動并且它們是由分子外流產生的；我們同時發現在co分子的譜線全寬和所對應源的紅外光度之間存在很好的相關性，線寬隨紅外光度增加而變大。

To understand the connections between methanol masers and other phenomena typical of star formation region , such as the associated far - infrared sources , we have investigated statistical properties of all known 6 , 7 ghz methanol maser sources . the result suggests that 6 , 7 ghz methanol maser emission may appear only during a limited period of massive star formation 6 . 7ghz甲醇脈澤源的統計結果暗示著它們可能僅僅發生在大質量恒星形成的一個很短的時段內，可能起源于拱核盤中或外流中，遠紅外輻射則是一種可能的抽運機制。

We study the nonlinear plasma filled cerenkov maser and linear plasma f illed coupled cavity chain . the principal conclusions of this dissertation are given below : 1 . we study the nonlinear plasma grating filled dielectric cerenkov maser oscillator cavity for the first time 我們對非線性等離子體柵填充的介質cerenkov脈塞和線性等離子體填充的耦合腔鏈進行了研究，主要的研究成果和結論有：一、首次研究了非線性等離子體柵填充的介質cerenkov脈塞振蕩器。

The academician liu shenggang stroke out the direction of electron cyclotron maser research and the team which is guided by professor li hongfu has done much research on gyrotron in the late 1970s . the paper based on the team ’ s important project , that the research on the technology of 8mm high power gyroklystron 在國內,電子科技大學在70年代后期,劉盛綱院士開辟了回旋脈塞器件的研究方向,李宏福教授帶領下的課題組也對回旋管進行了大量的研究工作。

Being high power resources of millimeter - wave radiation , based on electron cyclotron maser , gyrotron has been pay much respect in the world for vast application in many areas such as plasma heating , linear accelerators , radar , communication , electronic countermeasure and so forth 回旋脈塞器件-回旋管作為大功率毫米波源,在等離子加熱、線性加速器、雷達、通信及電子對抗等領域有著廣泛的應用前景,由此受到了國際上的高度重視。

The magnetic field requirement of the sth harmonic gyroklystrons over cyclotron resonance masers ( crms ) would be reduced by a factor of s relative to operate on the fundamental cyclotron frequency , so that the amplifier could be applied to highly mobile millimeter wave radar systems 基于電子回旋諧振脈塞原理工作的諧波回旋速調放大器的工作磁場強度是基波的1 / s ( s是諧波數) ,因而能適用于機動性較高的軍用毫米波雷達系統。

In lasers ? invented a few years after the maser ? the cavity is simply the space contained by two mirrors , so that the light bounces back and forth , building up in intensity until a beam emerges from one of the mirrors ( which is partially transmitting ) 在邁射出現幾年之后發明出來的雷射，其所用的共振腔，不過就是兩片鏡子所夾的空間，光在里面可以來回反射使強度逐漸增強，直到光束從其中的一面（可以部份透射的）鏡子穿透射出。

Denisov and others , is more ideal than others . the academician liu shenggang stroke out the direction of electron cyclotron maser research and the team which is guided by professor li hongfu has done much research on gyrotron in the late 1970s 在國內,電子科技大學在70年代后期,劉盛綱院士開辟了回旋脈塞器件的研究方向,李宏福教授帶領下的課題組也對回旋管進行了大量的研究工作。

Includes letters of the wesley family , methodist periodicals , maser and prinster prayer books , hymnology collection and 19th century pamphlets , as well as documents of bela kornitzer , eliot porter , georges simenon , george d . kelsey and carl michalson - 1986年4月12日成立，設有館長室辦公室檔案業務指導監督室檔案保管利用室檔案科學及史料應用研究室等五個室。

This led to the first amplification and generation of electromagnetic waves by stimulated emission in early 1954 . they called this device a maser ( microwave amplification by stimulated emission of radiation ) 光來放大媒質的儀器，并于一九五四年成功研制成第一臺微波激射放大器，稱為maser （ microwaveamplificationbysimulatedemissionofradiation ） 。

Besides acting as powerful signposts of active star formation , the intense maser emission provides a unique tool to probe the physical conditions and kinematics of these regions on scales of 10 - 103 au 星際脈澤不僅是恒星形成的一個及其重要的標志，而且也提供圍繞大質量恒星尺度10 - 10 ~ 3au分子氣體的物理條件和動力學結構的信息。