接收不穩定 的英文怎麼說

中文拼音 [jiēshōubùwěndìng]
接收不穩定 英文
fm/am/sm oscillation
  • 接 : Ⅰ動詞1 （靠近;接觸） come into contact with; come close to 2 （連接; 使連接） connect; join; put ...
  • 收 : Ⅰ動詞1 （把攤開的或分散的事物聚集、合攏） put away; take in 2 （收取） collect 3 （收割） harvest...
  • 不 : 名詞[書面語] （剁物所用的木墩） a block of wood
  • 穩 : 形容詞1 （穩定; 穩當） steady; stable; firm 2 （穩重） steady; staid; sedate 3 （穩妥） sure; rel...
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 接收 : 1 （收受） receive; reception; accept; [電學] receipt; receiving 2 （接管） take over; expropriat...
  • 穩定 : 1 （使穩定） stabilize; steady 2 （穩固安定） stable; steady 3 （物質的性能不易改變的作用） stabi...
  1. The motion carriers such as the automobile, trains, war vessels, the plane and so on, are in flux by their position and azimuth, if want kepting satellitic message and taking over satellitic signal, must adopt the platform system of tenaclous tracking satellite antenna

    汽車、火車、艦船、飛機等運動載體的位置和姿態不斷的在變化，要保持與衛星的通訊聯系和接收衛星視頻等信號，就必須採用衛星天線穩定跟蹤平臺系統。
  2. A novel dynamic evolutionary clustering algorithm ( deca ) is proposed in this paper to overcome the shortcomings of fuzzy modeling method based on general clustering algorithms that fuzzy rule number should be determined beforehand. deca searches for the optimal cluster number by using the improved genetic techniques to optimize string lengths of chromosomes ; at the same time, the convergence of clustering center parameters is expedited with the help of fuzzy c - means ( fcm ) algorithm. moreover, by introducing memory function and vaccine inoculation mechanism of immune system, at the same time, deca can converge to the optimal solution rapidly and stably. the proper fuzzy rule number and exact premise parameters are obtained simultaneously when using this efficient deca to identify fuzzy models. the effectiveness of the proposed fuzzy modeling method based on deca is demonstrated by simulation examples, and the accurate non - linear fuzzy models can be obtained when the method is applied to the thermal processes

    針對模糊聚類演算法不適應復雜環境的問題，提出了一種新的動態進化聚類演算法，克服了傳統模糊聚類建模演算法須事先確定規則數的缺陷.通過改進的遺傳策略來優化染色體長度，實現對聚類個數進行全局尋優;利用fcm演算法加快聚類中心參數的收斂;並引入免疫系統的記憶功能和疫苗接種機理，使演算法能快速穩定地收斂到最優解.利用這種高效的動態聚類演算法辨識模糊模型，可同時得到合適的模糊規則數和準確的前提參數，將其應用於控制過程可獲得高精度的非線性模糊模型
  3. Abstract : unsaturated polyester with low shrinkage composied of anti - shrinking agent, thermoplastics, dispersion - stabilizer, a kind of graft copolymer made from styrene and saturated polyester, shaped like a comb for its molecular structure and upr in certain structure and some factors effecting on low shrinkage were introduced in this paper

    文摘:研究了當用熱塑性樹脂作為不飽和聚酯樹脂低收縮劑時，合成了以苯乙烯為主鏈，聚酯為枝鏈的梳狀接枝共聚物，作低收縮劑的分散穩定劑，配合相應組成的不飽和聚酯樹脂得到了具有低收縮特性的不飽和聚酯組成物。
  4. Therefore, the farmers " income grows slowly, the development of agriculture confronts with difficulties and the rural unstable factors emerge

    農產品供大於求，結構性矛盾突出，農戶與市場對接困難，因此，農民收入增長緩慢，農業發展面臨困境，農村出現不穩定因素。
  5. These factors are physical capital, human capital, technology change, the level of specialization and the quantity of farmers. furthermore, on the basic hypothesis that farmers are rational economic men, it points out the negative attitude of farmers on improving these factors is rational choice. the actual land system, social security system and hukou system conduce that the property right of land is instable and difficult to be exchanged, the quantity of farmers is unable to decrease

    本文首先建立了一個簡單的數學模型，考察了直接影響農民農業收入的基本因素，包括：物質資本、人力資本、專業化水平、技術知識和農民數量；進而，從農民是理性經濟人的基本假設出發，指出農民在改進影響農業收入的諸因素方面的消極態度是既定製度約束下的理性選擇? ?現行的農地制度（社會保障制度） 、戶籍制度導致土地產權不穩定、難以流轉和農民數量難以減少，妨礙了土地的規模經營，使農民在物質資本投資、人力資本投資、深化專業化分工、學習和應用技術知識、向城市轉移勞動力方面表現出消極態度。
  6. To detect deformation within unstable volcanic islands, networks of continuous gps receivers are beginning to be deployed on r union island in the indian ocean, on fogo in the cape verde islands, and throughout the gal pagos archipelago, among others

    為了偵測不穩定的火山島內部變形的情形，科學家開始在印度洋的留尼旺島、維德角群島中的福哥島，以及整個加拉巴哥群島之間，布下天羅地網般的gps接收器，以連續接收資料。
  7. The choice dam type is especial importance, during the designed research of the rock - fill dam, particular under the rock - fill dam with very deeply cover layer, the stress and strain of the middle wall and cutting interpenetration wall of the dam foundation is mostly sensitive, whether the. design of dam is scientific and reasonable, it is very important for cutting interpenetration and stability of the dam, the article offer the reference for the design of cutting interpenetration in the foundation with deep cover with earth the water conservancy in xiaban zone, based on the study and analysis the design of cutting seep in the foundation with deep cover with earth, cutting interpenetration concrete wall and the joining model of cutting interpenetration material in body of dam and the applying effect in the practical worko based on the foundation which absorbed and summarize the achievement of design and research in the inter and outer country, for the project of the clay vertical middle wall and vertical cutting interpenetration, the asphalt concrete vertical middle wall and vertical cutting interpenetration the clay inclined middle wall and the lever carpet layer cutting interpenetration, respectively in terms of the different stage of complete period sluice period and working condition, adopting nonlinear calculate and analysis with the finite element method ; carrying the analysis and study with the 3d finite element method as to the different joining model of the left bank high slope cutting interpenetration body and the foundation concert cutting interpenetration wall ; carrying the analysis and study with the 3d finite element method as to the effect of the wall stress and strain because of the different elasticity modulus of the concert cutting interpenetration wall through the analysis and study with the different project. have comparatively all - around comprehended the various model dam, particular the distribute rule of stress and strain of the cutting interpenetration system, provide for the important evidence of the plastic area size the join model of the foundation cutting interpenetrate wall and dam body cutting interpenetrate system the choice of the dam model and the design of the structure of the dam body, the result of research and advice have very importance value in design and building for the similarity project

    工程設計中，壩型的選取顯得尤為重要，特別對于壩基有深厚覆蓋層的堆石壩，心墻和壩基防滲墻的應力和變形是壩體、壩基最敏感的部位，設計方案是否安全、科學和合理，對大壩防滲和穩定起到至觀重要的作用。本文研究分析了國內外深厚覆蓋層基礎防滲設計、壩基混凝土防滲墻與壩體防滲體銜接形式及工程實際應用效果，為下坂地水利樞紐工程深厚覆蓋層基礎防滲設計的方案選擇提供了參考；在吸收和歸納了國內外堆石壩的設計研究成果的基礎上，對粘土心墻和壩基垂直防滲方案、瀝青混凝土心墻和壩基垂直防滲方案以及粘土斜心墻和壩基水平鋪蓋防滲方案，分別按竣工期和蓄水運行期的不同工作情況進行了有限元非線性計算分析；對左岸高陡邊坡的大壩防滲體與基礎混凝土防滲墻的不同結合型式進行了三維有限元靜力計算分析和研究；對混凝土防滲墻不同彈性模量對墻體應力和變位的影響進行了三維有限元靜力計算分析和研究。通過對不同方案的計算分析和研究，比較全面的了解了各方案壩體，尤其是防滲體的應力和變形分佈規律，為壩型選擇、壩體結構設計、基礎防滲墻與壩體防滲體的結合型式以及塑性區大小的確定提供了重要依據。
  8. The new unit has following technical features : ( 1 ) the unit ' s load is balanced by means of the accumulator and hydraulic cylinder with special structure ; ( 2 ) the installed power of the unit can be reduced greatly by adopting the accumulator ; ( 3 ) variable frequency speed regulation ensures good energy saving effect, and the closed oil circuit requires less hydraulic oil ; ( 4 ) a bi - directional hydraulic lock in the oil circuit ensures the stability and safety of the operation of the pumping unit

    新型機具有4個技術特點： （ 1 ）由於活塞柱塞式液壓缸的特殊結構和液壓蓄能器的配合使用，在平衡抽油機大部分載荷時，不需另外增加配重，可減小抽油機體積、質量和佔地面積； （ 2 ）抽油機下沖程時，與活塞柱塞式液壓缸相連接的蓄能器吸收能量，上沖程時儲存在蓄能器中的能量補充載荷上行所需的能量，大幅度降低抽油機裝機功率； （ 3 ）利用變頻容積調速節能效率高，閉式油路節省液壓油，同時大大減小液壓泵站的體積； （ 4 ）在閉式油路中採用雙向液壓鎖可使抽油機的啟停更加平穩、迅速，其工作的穩定性和安全性更好。
  9. The reasons of the signal distortion are analyzed, and the relations of receiving bandwidth with distortion degree is discussed, for the more a steady point in the amplitude modulation signal is given by the method of the statistics. looking at the point as the timing reference point of the receiver, the stability of the receiver is less than 100us

    分析了接收信號失真和受干擾的原因所在，論述了接收帶寬和失真程度的關系，並在此基礎上，利用統計的方法在調幅信號的下降沿上找到了一個較為穩定的特徵點，將其作為接收機的定時參考點，定時不確定度可以達到數十微秒量級。
  10. In the process of building and using the mass concrete structures, because of the effect of out - side condition and themselves, some faults will form in the structure, these faults will effect the bearing capability and endurance using nondestructive testing method to test the concrete ' s quality and diagnose its healthy, which has the significant sense in assessing the safety stability and research of the administering diseases this dissertation mostly researched the testing methods in the mass concrete structure, discussed the principles, methods, features, sphere of application of the ultrasonic testing in the mass concrete structure with faults, used dynamic fem to simulate the testing process, discussed when the concrete structure with cracks is under the effect of the pulse, how the elastic waves propagate and what are their changing feature, researched the principles of the first - arriving waves " phase when the cracks " depths are not same, obtained the relation between the inversion point and the cracks " depth, which has the direction sense in the application of projects, the second part of this dissertation is ct, which used the ultrasonic wave running through the tested - substance to get arriving - time of the ultrasonic wave, then inverse the image this dissertation drawed one ct program which can well present the different little cells " ultrasonic wave velocity profiles of the substance, thereby to diagnose the quality of the part of the tested - substance, ct has the better using foreground.

    在混凝土結構的施工及使用過程中，由於受其自身及外界各種因素的影響，常常會產生一些缺陷，對結構物的承載能力和耐久性造成嚴重影響，採用無損檢測技術進行質量檢測和健康診斷，這對混凝土結構開展安全、穩定性評估以及病害隱患治理研究具有重要意義。本論文主要針對大體積混凝土結構缺陷的檢測方法展開研究工作，重點討論了超聲波法檢測混凝土結構裂縫的基本原理和方法及其特點、適用范圍，運用動力有限元數值模擬其檢測過程，探討了有裂縫缺陷的混凝土結構在脈沖荷載作用下彈性波的傳播及其變化特徵，研究了不同裂縫深度下首波相位變化規律，得出了反轉臨界點與裂縫深度之間的關系，這對實際工程應用具有指導意義。聲波ct是一種新的無損檢測技術，它是利用聲波穿透被檢測體獲取聲波接收時間，來進行計算機反演成像的技術。
  11. The phase noise in microwave receiver and the measured parameter of source frequency instability are described in this paper, and the technology of frequency - synthesizing and theory of phase locked loop ( pll ) are also briefly introduced

    摘要闡述了微波接收機中的相位噪聲概念及本振源頻率不穩定度的實際測量參數，並簡要介紹了頻率合成技術和鎖相環路工作原理。
  12. This method not only kept high and stable data filtering rates and effective data receiving rates in different situation but although greatly reduced matching number

    模糊分組方法不僅減少了匹配次數，還能維持穩定的、高效的數據過濾率，保證較高的有效數據接收率。
  13. The simulation in quartusii for the blocks with fpga is proposed at last. compare with the traditional polarization diversity and combining receiver, the stability of the scheme proposed in this paper is better, the parameter of it is reprogrammable, and upgrading of the system is also easily. then the diversity

    與傳統的極化分集接收機相比，利用本文提出的系統設計方案設計的數字極化分集接收機具有工作更穩定，參數可編程以及便於系統升級等優點，這樣就使得在一個硬體平臺上實現不同參數分集接收成為可能。
  14. Through the experiment, it is found that, when the compression percentage closes to 20 %, the compression pressure at the far end changes quickly and differs from that at the near end ; and when the compression percentage is less than 20 %, the compression pressure at the near end rises quickly and that at the far end transits from instability to reverse distribution state

    實驗研究表明，冠狀動脈面積收縮接近到原來的20 %時，遠段收縮壓迅速與近段收縮壓分離；當冠狀動脈面積收縮到小於原來的20 %時，近段收縮壓迅速上升，遠段壓力從不穩定狀態迅速過渡到收縮壓呈反向分佈狀態。
  15. We also do not consider it justifiable simply to lower the age limit of dependent parents regardless of their employment status or income level, in order to avoid the practicable problems described above. this is because it would unnecessarily benefit quite a substantial number of taxpayers whose parents are aged under 60 and are active income - earners

    我們認為，不理會受供養父母的就業狀況或入息多少，直接放寬受供養父母的年限制，以避免上述的種種實際困難，也是不合理的，因為可能有很多納稅人的父母年在60歲以下而又有穩定收入，他們會無故受惠。
  16. As a result, the ultra - wideband antenna must be able to radiate and receive the short pulse signals without distortion, in other words, the ultra - wideband antenna has to own several octave impedance bandwidth or more, and stable phase center, which enables the ultra - wideband antenna to transmit and receive short pulse signals without distortion

    這就要求超寬帶天線具有輻射和接收時域短脈沖信號的能力，即擁有幾個甚至十幾個倍頻程的阻抗帶寬，同時天線應具有穩定的相位中心以保證不失真地收發短脈沖信號。
  17. With the excellent hidden characteristics of passive receiving mechanism, passive location gains wide attention and recognition. however, this is confronted with the problems of low precision of location and instability of working status under complex environment

    無源定位以其被動接收隱蔽性好的優點，得到了廣泛的關注與重視，但面臨著定位精度偏低，復雜背景下工作狀態不夠穩定等問題。
  18. Because of the affection of noise and signal fading, in order to high data rate access and high quality, wireless communication need new technology to improve the link reliability and enhance the spectrum efficiency. mimo ( multiple input and multiple output ) can enhance the spectrum efficiency and increase channel capacity greatly, and reduce the multipath affection without spectrum band and power increasing. the 3th generation mobile communication wcdma is coming, with the purpose of putting mimo, stbc ( space time block coding ), space diversity into practice of wcdma systems, in order to lay the foundation of 3g toward 4g, this dissertation has done some research under this background

    在發射機和接收機使用多個天線進行數據傳輸的多輸入多輸出（ mimo ）技術，可以在不增加帶寬和天線發送功率的條件下，成倍的提高頻譜利用率，提高系統的通道容量，還可以抗多徑干擾。第三代移動通信wcdma即將到來，為了將多天線技術（ mimo ） ，空間分集技術，空時編碼技術用到wcdma系統中去，為第三代移動通信向第四代移動通信系統平穩過渡奠定一定的基礎，需要做一些理論上的研究。
  19. The three problems, especially the sustainable income growth of the peasant will directly contribute to the quality and level of life for peasant and the long - term stability and development of the nation

    「三農」問題尤其是農民收入問題不僅直接關繫到我國農民生活水平的提高與生活質量的改善，農村小康的全面建設與農業現代化的盡早實現，而且關系著整個國家與社會的長期穩定與發展。
  20. Abstract : ultrasonic welding for ribbon is widely used in developed countries ， electric resistance welding is still used in china. on absorbing foreign advanced technology ， the key assembly of the ultrasonic welding machine i. e. pneumatic working platform was manufatured. the cost of the machine and its spare parts is only 1 / 3 of the imports. the machine has been operated in a factory for four years ， and has been proved stable and reliable. the machine can substitute the imports

    文摘:超聲波焊接是發達國家色帶生產企業普遍採用的色帶焊接方法，而國內企業均採用落後的電阻絲焊.為此，在吸收消化國外先進技術的基礎上，自行開發了色帶焊接機的關鍵部件? ?氣動工作臺，實現了超聲波色帶焊接機的國產化，整機及配件價格不到進口產品的1 / 3 .產品經工廠4年多的實際應用，性能穩定、可靠，完全可替代進口
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