極高頻帶 的英文怎麼說
中文拼音 [jígāobīndài]
極高頻帶
英文
ehf band-
The factors limiting the frequency band of the wide - band amplifier are introduced. through analyzing the effects of the intrinsic parameters and parasitical on the frequency characteristics, a method of improving fr of mosfet by using short channel device and making mosfet work at the saturation region through raising vgs is put forward ; the effects of different kinds of circuit configurations on the frequency characteristics and the junction voltage on the voltage pattern circuit, current pattern circuit and frequency characteristics are analyzed. according to the linear theory of transconductance which is applied in the bit circuit, the current pattern amplifier circuit, current transfer circuit and output circuit which consist of mosfet and the wide - band amplifier composed of them are put forward
介紹了限制寬帶放大器頻帶寬度的因素，通過分析mosfet的本徵參數、寄生參數對頻率特性的影響，提出了採用短溝器件、使mosfet工作在飽和區、抬高柵源電壓等提高mosfet特徵頻率的方法；分析了不同電路組態對放大器頻率特性的影響、節點電壓對電壓模電路、電流模電路頻率特性的不同影響，根據應用於雙極晶體管電路的跨導線性原理，提出了採用mosfet構成的電流模放大電路、電流傳輸電路、輸出電路以及由它們所組成的寬帶放大器，獲得了良好的頻率響應。The dynamo runs at rull speed to drive main shaft, then the main shaft makes the emulsifying wings in emulsification grove rotate, which absorbs the liquid in its brand groove into ring groove through guide vanes on upper and lower sides of the groove. the vanes spins circularly at high speed with the main shatf as center, and the blade and emulsificaton groove cut and crush it continuously. after that. it gers squeezed by the vanes highspeed centrifugal rotation. at last, it finishes isotropt emulsification tratment within extremely short time after continuous circulating mixing
由電動機全速運轉帶動主軸，經主軸轉動乳化框槽內之乳化翼片，使其將桶槽內之液體經框槽上、下兩側之導流葉片吸入環狀框槽內，經以主軸為中心高速圓周旋轉葉片；連續使乳化翼端刀面與乳化框間極小之間系高頻率之強力切割剪斷、粉碎，再借葉片高速離心旋轉排擠，持續循環混合，以極短之時間即可完成均質乳化之處理。The results of research indicate that this tool has highly vertical and radial resolution. it can calculate accurately the invaded zone and the invaded radius
研究結果表明，高頻等參數感應具有極高的縱向解析度和較好的徑向探測特性，能夠準確地計算地層真電阻率、侵入帶電阻率及侵入半徑。A novel broadband and high - gain microstrip reflect array antenna with variable polarization
一種新型寬頻帶高增益的變極化微帶反射陣天線Rthk tested dab in l band in 1998. since then, dab technologies have undergone improvements ; rthks current test of dab vhf band iii is expected to offer a better indoor and outdoor performance. moreover, the price of the receivers has gone down substantially
港臺於1998年測試dab時，是以l頻帶l band進行，這幾年來dab技術上有所改進，今次dab測試極高頻帶vhf band iii ，相信有較佳的室內和室外接收的效果，而接收器的價格也經已回落。With the high accurate transfer function it is possible to design frequency characteristic compensator to eliminate the mechanic resonance frequency characteristic of the control object. the fast steering mirror system closed bandwidth is no longer restricted by the mechanic resonance frequency and the closed bandwidth is expanded effectively
在獲得對象的高精度傳遞函數以後，使用零極點對消的方法補償系統的機械諧振，有效地擴展了快速控制反射鏡系統的帶寬，使快速控制反射鏡系統的閉環帶寬不再受制於系統的開環諧振頻率。It takes to you the integrity during complete wonder, the high school low frequency all processes qia arrives the advantage, has not exploded the tendency, actually has extremely richly, extremely has elastically low frequency, moreover is in no way muddy, regardless of from selects a song arrange which, dubs in music, also perhaps is high, center, the low frequency technical utilization, again perhaps the prelude, plays the rhythm which, the tail plays, in abundantly picks in the audiences long foundation all has the unprecedented innovation
它帶給你完整無缺的美妙，高中低頻均處理得洽到好處，沒有膨爆的動態，卻有極其豐富，極具彈性的低頻，而且決不混濁，無論從選曲、配樂的編配，亦或是高、中、低頻的技術運用，再或是前奏、間奏、尾奏的韻律，在博採眾長的基礎上都有前所未有的創新。Many technologies of electrically small antennas and wide band antennas are discussed in theory, simulation and experiment. and some novel electrically small or wide band antennas are proposed. the loaded monopole is analyzed in depth integrating the genetic algorithm ( ga ) with the method of moments ( mom ) in order to increase the gain and decrease the vswr of antennas used at hf / vhf band
在本論文的研究過程中，通過合理利用各種現有的天線寬帶化和小型化的理論成果、有效的綜合各種技術措施，運用矩量法和遺傳優化演算法等數值方法，深入研究了加載單極子天線問題，旨在全面提高高頻/甚高頻頻段內的天線增益和降低電壓駐波比，以獲得較高增益的、基本滿足駐波要求的小型超寬帶天線。In order to supply the main two services ? vod ( video on demand ) and iptv which are used popularly in the application, 8010r & d designed a new streaming media system based on our new operating system named digital organic system ( dos ) with high dependability, high concurrence, low - price - high - efficiency and high retractility as its characters. in our stream media system, there are three important components
當前政府正在大力推廣internet及寬帶網路，加之正在興起的網路電視計劃，這些因素極大的推動了網路流媒體業務的迅速發展。針對目前流媒體應用最廣泛的視頻點播和在線直播服務， 8010實驗室自主研發了具有高可靠性、高並發性、高性價比及高伸縮性的數字有機體流媒體播放系統。As a wide bandgap semiconductor material, silicon carbide is an exellent material with superior thermal, electrical, mechanical and chemical properties for the fabrication of high temperature, high power, high frequency and radiation hardening electronic devices
Sic是一種寬帶隙半導體材料、第三代半導體材料的代表，是製造高溫、高頻、大功率、抗輻照等半導體器件的優選材料，又被稱為極端電子學材料，在微電子學領域具有廣闊的應用前景。Consumers successively plunged a large number of silicon controlled commuted devices ( such as steel rolling 、 electrized locomotive 、 aluminium electrolysed devices etc ) and smelting devices to improve their produced efficiency or to save energy. on the one hand it is good for consumers, on the other hand it will arouse the fluctuation of voltage and frequency and it will result in the collision of the active and reactance capacity. meanwhile these nonlinear loads bring much harmonic into the electric network which deteriorate the quality of power supply and hazard the online device enormously
用電部門為了提高生產效益、節約能源，在大電網中相繼出現了大量的可控硅整流裝置（如軋鋼、電氣化機車、鋁加工電解設備等）以及冶煉設備，這些設備的投入使用對節能有一定好處，但給電網造成有、無功沖擊，引起電壓和頻率的波動，同時，這些非線性負荷向電網注入大量諧波，大大惡化了供電系統的電能質量，給用電設備帶來了極大的危害。However, the inherent shortcoming of piezoelectric transformer hinders its further development. the major problems include : ( 1 ) the development and design of the piezoelectric transformer involve in lots of theoretic aspects including the design of material, dimension, electrode and circuit ; ( 2 ) it is hard to harvest high voltage enhancement ratio and high - power output simultaneously ; ( 3 ) the operation of the piezoelectric transformer is strongly dependent on the resonance frequency, which leads to the difficulty in the design of driving circuit
但其自身所存在的固有缺點也在很大程度上限制了壓電變壓器的進一步發展，突出的問題有:壓電變壓器的研製包括材料設計、尺寸設計、電極設計和電路設計等多個環節，所涉及的理論面很廣;壓電變壓器的高陞壓比和大功率輸出難以同時得到保證;壓電變壓器的工作過多地依賴于諧振頻率，為外部電路的設計帶來了困難。Connectors with assessed quality for use in d. c., low - frequency analogue and in digital high speed data applications. part 4 : printed board connectors. section 102 : detail specification for two - part single - pole connectors, for multiple uses on plug - in units, with pre - centring, coding and early mating features, having a metric grid in accordance with iec 60917
經質量評估的直流低頻模擬和數字高速數據設備用連接器.第4部分:印刷電路板連接器.第102節:帶前定心編碼和預配合部件的符合iec 60917的公制柵格多用途插件用雙部分單極連接器的祥細規范Connectors with assessed quality, for use in d. c., low - frequency analogue and in digital high speed data applications - printed board connectors - detail specification for two - part single - pole connectors, for multiple uses on plug - in units, with pre - centring, coding and early mating features, having a metric grid in accordance with iec 60917
直流低頻率模擬及高速數字數據系統用已經過過質量評定的連接器.第4部分:印製電路板聯接器.第102節:帶前定心編碼和預配合部件的米制多用途插件用雙部分單極聯接器的詳細規范Connectors with assessed quality for use in d. c., low - frequency analogue and in digital high speed data applications - part 4 : printed board connectors - section 102 : detail specification for two - part single - pole connectors, for multiple uses on plug - in units, with pre - centring, coding and early mating features, having a metric grid in accordance with iec 60917
直流低頻率模擬及高速數據數字系統用已進行過質量評定的連接器.第4部分:印製電路板聯接器.第102節:帶前定心，編碼和預配合部件的米制多用途插件用雙部分單極聯接器的祥細規格However, in hf band, the band of the antennas is narrow, and the input impedance of monopole antenna with limited height undergoes rapid variation with frequency
但是，在hf頻段，有限高無加載單極子天線帶寬相對較窄，輸入阻抗隨頻率劇烈變化，難于和50的同軸饋線匹配。To add " the economic activities of hong kong are getting busier by the day and its population keeps growing, and " after " that, as " ; to add " generated " after " amount of waste " ; to add " and trades " after " development of environmental industries " ; to add " and trades " after " comprehensive policy on environmental industries " ; to add " and principles such as polluter - pays to reduce waste generation and increase incentive to recover waste and, at the same time, studying the feasibility of restricting the disposal of toxic waste in landfills, so as " after " producer responsibility scheme " ; to add " the source separation of domestic waste programme as well as " after " comprehensively implementing " ; to add " as well as separation " after " recovery stations " ; to delete " and " after " green procurement policy " and substitute with ", " ; to add " and strongly urging public and private organizations to develop green procurement guidelines " after " to comply with it " ; to add " and labelling " after " green certification " ; to add " as well as establishing a database " after " products and services " ; to add " expediting the tendering exercise for the remaining lots in phase i of the ecopark and expeditiously drawing up a timetable for the granting of lots in phase ii in order to develop high value - added environmental industries ; " after " ; to delete " and " after " related work ; " and substitute with " reviewing the existing legislation regulating environmental industries and trades and actively studying the feasibility of implementing a licensing regime for certain environmental industries and trades, in order to enable a healthy development of such enterprises and, at the same time, avoid causing unnecessary damage to the natural environment and nuisances to the residents in the vicinity ; and " ; to delete the original " and substitute with " ; to add " and trades " after " participate in those environmental industries " ; and to add " and trades " after " promoting the economic development of environmental industries "
在"鑒于"之後加上"香港經濟活動日益頻繁和人口持續增加， "在"本港廢物"之後加上"產生"在"構成環保工業"之後加上"和行業"在"政府為環保工業"之後加上"和行業"在"生產者責任制"之後刪除" ，以" ，並以"和污染者自付等原則，以減少產生廢物和增強廢物回收意欲，同時研究限制將有毒廢物棄置在堆填區的可行性，從而"代替在"全面推行"之後加上"家居廢物源頭分類計劃和"在"廢物回收點"之後加上"分類"在"遵守， "之後加上"力促各公營和私營機構訂立環保采購指引， "在"環保認證"之後加上"和標簽"在"制度， "之後加上"以及建立資料庫， "在"六"之後加上"加快進行環保園第一期餘下土地的招標工作和盡快制訂第二期計劃的批地時間表，以發展高增值的環保工業"在"相關工作"之後刪除"及" ，並以"七檢討現行規管環保工業和行業的法例，積極研究對某些環保工業和行業實施發牌制度的可行性，令該等企業得以健康發展，同時避免對自然環境帶來不必要破壞和對附近居民造成滋擾及"代替刪除原有的"七" ，並以"八"代替在"具前景的環保工業"之後加上"和行業"及在"推動環保工業"之後加上"和行業" 。This paper is described wavelet transform theory, mother wavelet choice, the method to filter signal by wavelet transform and the result, prospered a way to extract feature originated from wavelet theory, which using wavelet packet analyzing method to subdivide signal both in low frequency and high frequency field, and consider energy of every layer as feature in frequency field, and in conjunction with the detailed analyzing character of wavelet packet in time - frequency plane, consider several minimum or maximum points in the lowest frequency band a s features in the time field
本文介紹了小波變換的理論、基小波的選擇和利用小波變換進行信號濾波的方法和濾波處理結果，並提出了一種基於小波理論的新的特徵值提取方法。即利用小波包分析方法將信號在低頻、高頻段作進一步的細分，以各層分解的能量作為信號的頻域特徵值，以最低頻帶的極值點作為時域特徵值，這樣的特徵值選取方法較全面的反映了信號的時-頻特徵，優于傳統的傅里葉分析方法。This mcu maximumly avoids high frequency and noise & reflection caused by heavy loads, so that it has the peculiarity of reliability, usability and expansibility
該設計極大地避免了高頻及高負載所帶來的噪聲和反射問題，使主控盤具有可靠性、可用性和可擴展性等特點。Connectors for use in d. c., low frequency analogue and digital high speed data applications - part 4 - 104 : printed board connectors with assessed quality - detail specification for two - part modular connectors, basic grid of 2, 0 mm, with terminations on an multiple grid of 0, 5 mm
直流電用的低頻模擬和數字高速應用的連接器.第4 - 104部分:已評估質量的印製板連接器.兩部分調模器連接器的詳細規范.帶有在0 ， 5mm多重柵極終端的2 . 0mm基本柵極分享友人