active microwave 中文意思是什麼

Airborne synthetic aperture radar ( sar ) is a kind of active remote sensor, which works in the microwave band and takes aircraft as the working platform

機載合成孔徑雷達是一種以飛行器為平臺，工作在微波波段的主動式遙感器。

Topics include : planets, planet formation ; stars, the sun, " normal " stars, star formation ; stellar evolution, supernovae, compact objects ( white dwarfs, neutron stars, and black holes ), plusars, binary x - ray sources ; star clusters, globular and open clusters ; interstellar medium, gas, dust, magnetic fields, cosmic rays ; distance ladder ; galaxies, normal and active galaxies, jets ; gravitational lensing ; large scaling structure ; newtonian cosmology, dynamical expansion and thermal history of the universe ; cosmic microwave background radiation ; big - bang nucleosynthesis

課程的主題包含了：行星、行星形成；恆星、太陽、正常的恆星、恆星形成；恆星演化、超新星、緻密天體（白矮星、中子星及黑洞） 、波霎、雙x -射線源；星團、球狀及疏散星團；星際介質、氣體、塵埃、磁場、宇宙射線；距離階梯；星系、正常及活躍星系、噴流；重力透鏡；大尺度結構；牛頓宇宙學、宇宙的動力膨脹及溫度發展歷史；宇宙背景微波輻射；大霹靂核合成。

Four kinds of 7 - ( n, n - diethylamino ) coumarins with highly active groups were synthesized under microwave irradiation and their structures were characterized by ir, nmr

摘要採用微波輻射技術合成了4種帶有較強反應基團的7 -二乙胺基類香豆素，並通過紅外光譜、核磁共振等手段對產物的結構進行了表徵。

Good agreements have been obtained between the results from these simulation methods and experimental measurements to show the validity and efficiency of these methods. from these examples, some problems of dealing with fdtd simulation of some microwave active circuits are solved

通過實例的驗證，演示了各種處理微波器件的方法的具體實現，表明了各種方法的有效性，解決了處理微波有源電路的fdtd模擬時遇到的問題。

The topic of this paper originates from the national nature science fund " fdtd analysis and design of microwave active integrated circuits ". an analysis of microwave active circuits using fdtd method with the emphasis on the several methods with which to simulate the active devices in the microwave circuits is studied in details in this paper. and some practical electromagnetic problems are analyzed with these methods

本論文題目來源於自然科學基金「微波有源集成電路的fdtd模擬與設計」 ，研究了時域有限差分法對微波有源電路的分析，主要研究了微波電路中各種微波器件進行fdtd模擬時的幾種處理方法，並採用這幾種方法分析了幾個實際的電磁問題。

Studies on the reaction of aromatic aldehyde with active methylene compound under microwave irradiation

微波輻射下芳醛與活性亞甲基化合物的反應

Study on microwave - assisted extraction of active constituents from the flowers of pueraria lobata

微波助溶提取雲臺山野葛花總黃酮的研究

The optimum conditions of preparation were as fellows : the concentration of zinc sulfate solution of 1. 8 - 2. omol / l, the concentration of ammonium bicarbonate solution of 1. 4 ~ 1. 6mol / l, the time of ultrasonic radiation of 25 ~ 30min. iv. preparation of active zinc oxide by means of microwave radiation to calcine precursor of basic zinc carbonate firstly, and a mechanism on preparation of ultra - fine active zinc oxide by means of microwave radiation has been investigated emphatically as well as the effects on quality of ultra - fine active zinc oxide have been analyzed and discussed in detail, the time of microwave radiation was 7 ~ 16 min ; comparing microwave radiation calcining with conventional calcining, the calcining time of microwave radiation was one thirty to one twenty, the calcining time shortened hugely, energy consumption saved hugely, the quality of product improved

首次引入超聲波輻射制備超細活性氧化鋅前驅體堿式碳酸鋅新技術，研究了超聲波輻射制備前驅體堿式碳酸鋅的機理，並分析和討論了影響前驅體質量的各種因素，確定了最佳的前驅體制備條件為：硫酸鋅濃度為1 . 8 2 . 0mol / l ，碳酸氫銨的濃度為1 . 4 1 . 6mol / l ，超聲波輻射25 30min ； 4 、首次採用微波加熱煅燒前驅體堿式碳酸鋅制備超細活性氧化鋅的新技術，研究了微波輻射加熱煅燒前驅體制備超細活性氧化鋅的機理，並分析和討論了影響活性氧化鋅質量的各種因素，確定了最佳的超細活性氧化鋅制備條件為：微波加熱煅燒時間為7 16min ，與傳統煅燒方法相比，煅燒時間僅為傳統的1 30 1 20 ，大大縮短煅燒時間，節省能耗，提高了煅燒產品的質量； 5 、完成了從鋅浮渣中制備超細活性氧化鋅的小試試驗和擴大試驗。

Synthetic aperture radar ( sar ) is an active microwave remote sensing imaging system, which is widely used in earth observation and military detection due to its quality of working all day, all weather and its penetration ability in certain frequency band

合成孔徑雷達（ sar ）是一種主動式成像雷達，由於它具有全天時、全天候的監測特性，並且在一定波段對植被、淺層土壤具有穿透能力，因此被廣泛應用於農林、地質、水文、海洋與環境監測、國防等領域。

Coplanar waveguides ( cpw ' s ) offer several advantages over conventional microstrips, these include the simplification of the circuit fabrication process, ease of parallel and series insertion of both active and passive components ( without the need for via holes ), and high circuit density. therefore cpw ' s are widely used in microwave and millimeter - wave integrated circuits, optical and high temperature superconductor microwave devices

與常規的微帶傳輸線相比，共面波導具有容易製作，容易實現無源、有源器件在微波電路中的串聯和並聯（不需要在基片上穿孔） ，容易提高電路密度等優點，因此共面波導被廣泛應用於微波、毫米波、光學和高溫超導等集成電路中。

Lead founder has over 18 years experience in the technology development, product design and volume manufacturing of microwave mmwave mfms odus systems used in commercial wireless communication equipments. starwave develops stat - of - the - art mic technologies, covering frequency range up to 70 ghz, design products, covering active microwave mmwave mfms sub - systems up to odu level, apply both thin - film and soft - board technologies to achieve high quality and cost effective volume production

年內，西安市政府和國家將出臺一系列政策並投入專項資金，扶植包括西安達威在內的頭企業，並由此帶動西安一大批無線通信設備製造的上下游配套企業，在中國建立起一個世界一流的無線通信研發設計製造基地和銷售中心。

Second, several feasible methods with which to incorporate the microwave devices into the fdtd simulation of microwave active circuits are discussed. direct implementation places the circuit element on the edge of a fdtd cell as a two - terminal element in the device region. another implementation is to place effective electric currents, or equivalently, current sources, voltage sources and effective magnetic current sources

接著研究了如何把微波器件加入微波電路中進行fdtd模擬的幾種方法，其中一種方法是把微波器件作為一個二埠元件放置在一個網格的邊上直接進行fdtd運算，另外一種方法是在有微波器件的區域使用有效的電流來代替微波器件，或者等效的源，包括等效電流源，等效電壓源和等效磁流源。

This thesis overall views the historical development, future trend, active devices. sensitivity definitions and configurations of microwave and millimeter mixers, and then discuss several kinds of mixers and mixer diodes

本文系統地介紹了微波毫米波混頻器的發展概況和今後的發展趨勢、實現混頻器的有源器件及其封裝形式以及利用它們實現混頻的優缺點。

Synthetic aperture radar ( sar ) is an active microwave remote sensor, which has the high azimuth resolution by using the theorem of synthetic aperture. because of its widely application in military and civilian synthetic aperture radar has received more and more recognition

合成孔徑雷達是主動式微波成像雷達，是利用信號處理技術以小的真實孔徑天線達到高解析度成像的雷達系統，由於其在民用和軍事方面的應用，越來越受到廣泛的關注。

And the general procedures of these methods are summarized. finally, some practical problems are analyzed using fdtd, which include passive linear resistor element and nonlinear diode element in the microwave circuits and an integrated antenna embedded with an active gunn diode element and a dielectric cavity resonator

最後，本文通過編程模擬了微波電路中的無源線性器件電阻和非線性器件二極體，含有有源器件gunn二極體的有源集成微帶天線以及介質腔諧振器等具體實例，來驗證各種方法的可行性和有效性，計算結果與實驗結果吻合。

The highly active microwave plasma is able to remove hardened resist and guarantees for highest ash rates and damage - free processing

這個高活性的微波等離子能處理高強度的抵抗灰燼並保證最高的灰燼處理效率，處理過程中對產品沒有任何損害。

A monolithic microwave integrated circuit ( mmic ) is a microwave circuit in which the active and passive components are fabricated on the same semiconductor substrate. mmic, having advantages of small size, light mass, high reliability and excellent reproducibility, finds use in a variety of microwave system, especially in airborne radar and space applications

單片微波集成電路（ mmic ）是將有源元件和無源元件都集成在同一個半導體襯底上的微波電路；具有尺寸小、重量輕、可靠性高、生產重復性好等優點，廣泛應用於各種微波系統，特別是機載雷達和衛星通信等方面。

By improving the process technologies, si - based active devices, for example, mosfet ' s and bjt ' s et al, demonstrate an extremely high f, f and fmax, which is sufficient for radio frequency ( rf ) / microwave applications

對硅基有源器件，如mosfet 』 s和bjt 』 s等，通過改進工藝技術，可以得到很高的特徵頻率f _ t和振蕩頻率f _ （ max ）性能，能夠滿足射頻微波應用的要求。