流線型天線 的英文怎麼說

中文拼音 [liúxiànxíngtiānxiàn]
流線型天線 英文
streamlined aerial
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 線 : 名詞1 （用絲、棉、金屬等製成的細長的東西） thread; string; wire 2 [數學] （一個點任意移動所構成的...
  • 流線型 : streamline; streamlining; fairness; hydraulic form; hydrodynamic form流線型車體 racing body; 流線...
  • 流線 : filament line; filum aquae; flow line; streamline; streamlining; line of flow; stream filament流...
  1. D - amino acids as unnatural chiral products are important intermediates in the synthesis of products, such as - lactam semisynthetic antibiotics, antiviral agents, artificial sweeteners, pesticide, peptide hormones, and pyrethroids, etc. though bioconversion of d - amino acids using microbial cells has been realized in industrialization for decades, some limited factors hinder the development of d - amino acid production, and ultimately result in shortage of the raw material in the related industrial fields

    目前，用微生物菌體轉化生產d -型氨基酸的工藝路線已經產業化，但天然菌體轉化工藝存在一些限制因素，阻礙了d -型氨基酸的擴大生產，導致產品短缺。因此，利用基因工程菌生物轉化d -型氨基酸已成為世界氨基酸產業的新潮流。
  2. Many planets ( for example, ganymede, mercury, the earth, jupiter and saturn ) and stars ( for example, the sun ) possess intrinsic magnetic fields. the explanation for their existence and variation remains a great challenge to planetary scientists and astrophysicists. this article attempts to review some recent developments and difficulties in the study of magnetohydrodynamics for the electrically conducting fluid interiors of planets and stars. it is the fluid motions, usually driven by thermal convection, that generate and sustain magnetic fields through magnetohydrodynamic processes in planets and stars. in planets, the magnetohydrodynamic processes are strongly affected by the combined and inseparable effects of rotation, magnetic fields and spherical geometry. the key dynamics involves the interaction between the coriolis and lorentz forces. in the sun, it is the solar tachocline, a thin shear flow layer located at the base of the convection envelope, that plays an essential role in the solar magnetohydrodynamic processes which produce the 11 - year sunspot cycle. some results of a new nonlinear three - dimensional solar dynamo model are also presented

    許多行星（如木衛三，水星，地球，木星和土星）和恆星（如太陽）具有內部磁場.對這些磁場的存在和變化的解釋對行星科學家和天體物理學家是一個巨大的挑戰.本文試圖總結行星和恆星的導電流體內部磁流體力學研究的新近發展和困難.一般由熱對流驅動的流動通過磁流體力學過程產生並維持在行星和恆星中的磁場.在行星中磁流體力學過程強烈地受到轉動，磁場和球幾何位型的綜合影響.其動力學的關鍵方面涉及科里奧利力和洛倫茲力間的相互作用.在太陽中其流線，即處于對流層的薄的剪切流層在太陽的磁流體力學過程中扮演了一個基本的角色，並由之產生了11年的太陽黑子周期.本文也給出了一個新的非線性三維太陽發電機模型
  3. Observed tidal harmonic constants in many stations are used to verify the astronomical tides in the compound fluid model. the wave model is tested by a set of wave flume data at first. then the results are compared by the actual processes of significant wave height in gauging stations

    其中復合流場模型中的天文潮利用眾多測站的實測調和常數進行驗證；波浪模型首先進行了水槽實驗的檢驗，然後在臺風過程中，進行了測站有效波高過程線的比較。
  4. On the other hand, the harmonic and surge current in capacitor banks is restrained so that the capaci - tor is protected by reactor. since this type of reactor has a dry - type air - cored structure, no - core structure without ferromagnetic induc - tion effect, it is provided with the feature of good linearity and low noise, so that the product is convenient for maintenance and ope - ration in all weather

    該型電抗器採用乾式空心結構，維護簡單，運行安全，無鐵心，不存在鐵磁飽和，電感值不會隨電流變化而變化，線性度好，噪聲低，適合全天候條件下運行。
  5. According to the abundance well logging, mud logging and core analysis data, gaotaizi reservoir has been classified into four sand group with the principle of cycle comparison and classified control. based on the detailed study of lithologic character, sedimentary structure, paleontologic fossils, depositional sequence, rock association and logging data, the microfacies of the studied area are divided into such seven types : subaqueous distributary channel microfacies ; river mouth bar microfacies ; subaqueous interdistributary channel microfacies ; subaqueous crevasse channel microfacies ; subaqueous natural barrier microfacies ; distal bar microfacies ; delta front sheet sand microfacies. the characteristic of each sedimentary microfacies are described detailedly

    通過研究大量測井、錄井資料和巖芯資料，依據「旋迴對比，分級控制」的原則，把研究區高臺子油層劃分為g 、 g 、 g 、 g四個砂層組。通過對研究區巖性、沉積構造、古生物、沉積序列、巖石組合及測井曲線特徵進行研究的基礎上，認為研究區高臺子油層屬於三角洲前緣亞相沉積，並將研究區沉積微相劃分為：水下分流河道、河口壩、水下分流河道間、水下決口扇、水下天然堤、遠砂壩、席狀砂等七種微相類型。
  6. Through field investigation, microscopic study, x - ray phase analysis and mineral infrared spectrum analysis, the authors determine the laumontitization had occurred widely in the axi gold field. according to the development of laumontitization and its relationship to mineralization, authors reveal that the laumontitization appeared mainly at the top and periphery to ore - bodies. it befallen at the edge of the geothermal fluid system or happened in the late stage of geothermal fluid system evolution, hence can be assigned as an indicator to prospect for epithermal gold deposit. the fluid causing laumontitization in the axi gold deposit is similar to those causing hot spring type gold deposit or in modern geothermal field. the fluidization of the axi gold deposit happened in carboniferous, showing the west tianshan is a good district for epithermal gold mineralization and preservation. so west tianshan is prospecting for exploring epithermal gold deposit

    通過野外考察顯微鏡下薄片鑒定x射線物相分析和礦物紅外光譜等研究，確定了阿希金礦濁沸石化的普遍存在根據濁沸石化發生的規律及其與礦床形成的關系，確定濁沸石化主要見于礦體的上部和外圍，發育在地熱流體系統的邊緣和演化晚期，可作為尋找淺成低溫熱液型金礦的標志之一。導致阿希金礦濁沸石化的流體性質與熱泉型金礦成礦流體和現代地熱田類似，流體作用發生在石炭紀，證明西天山地區具有良好的淺成低溫熱液型金礦的形成和保存環境，因此找礦前景較好。
  7. To this area precipitation materials for many years, evaporate materials, surface flow materials, hydrometeorological materials, hydrogeological materials carry on exhaustive analysis, have analysed the state of water resource of the sand district, proceed from the heat of the earth ' s surface is balanced, water yield balanced basic theories, combine the amount of regional water resource set up of the materials, such as scene, hydrology, soil of the sand district, etc. and estimate models, have calculated the surface water, groundwater of this area, has carried on models to examine according to the real data, and has predicted to the state of water resource under different climate change scenes of future that analyse. have put forward the scheme that the water resource in this area utilized rationally, use the non - linear motive force model to predict the precipitation, utilize the materials of actual observation, the natural supply amount of calculating out groundwater of sand ground of balanced principle of the amount of water used at the same time, and can exploiting amount predict to groundwater, district of sand,

    本文以寧夏半乾旱地區鹽池縣沙地水資源為研究對象，對該地區多年降水資料、蒸發資料、徑流資料、水文氣象資料、水文地質資料進行了詳盡的分析，分析了沙區的水資源狀況，從地表熱量平衡、水量平衡的基本理論出發，結合沙區的氣象、水文、土壤等資料建立了區域水資源量估算模型，計算了該地區的地表水、地下水，根據實際資料進行了模型檢驗，並對未來不同氣候變化情景下的水資源狀況進行了預測分析，提出了該地區水資源合理利用的方案，運用非線性動力模型對降水量進行預測，同時利用實際觀測資料，運用水量平衡原理計算出沙地地下水的天然補給量，並對沙區地下水可開采量進行預測。
  8. Conclusion after the rhizomorph of a. mellea infected g. elata nutritional stems, hyphal coils and the hyphal stream will breakthrough passage cells as well as large cells surround the whole nutritional stems, so the passage cells is the key nutritional resource in the whole growth period of g. elata

    結論蜜環菌索侵入天麻營繁莖后，菌絲結、突破菌絲通道的菌絲流，及大型細胞等三層細胞層呈片狀環周包圍了整個營繁莖，菌絲通道是天麻整個生長期營養的補給線。
  9. The paper includes four sections followed here : the first section studies the modeling of signals of pulse doppler radar seeker, and establishes a radar signal simulation model, including radar emitting signal model, receiving signal model, receiving echo signal model, clutter model, noise model, sum channel directional pattern of antenna model, difference channel directional pattern of antenna model, sheltering model, rcs model, glint noise model, etc. the second section studies signal processing of pulse doppler radar seeker, and establishes radar signal processing mathematical model and data processing mathematical model for simulation, including windowing, doppler filtering, envelope demodulation, pdi, cfar, centering, velocity tracking, angle tracking, a - b filtering, etc. the third section studies the modeling of modified proportion guiding, and establishes guiding model, then dynamic simulation results is provided

    論文的主要工作包括四部分：第一部分研究了脈沖多普勒雷達導引頭的信號建模問題，建立了雷達信號模型，主要包括：發射信號模型、接收信號模型、目標回波信號模型、雜波模型、噪聲模型、和差通道天線方向圖模型、遮擋因子模型、接收機噪聲模型、目標雷達截面積統計性模型、目標角閃爍模型等。第二部分研究了脈沖多普勒雷達導引頭的信號處理模式，建立了信號和數據處理模型，主要包括：加窗和多普勒濾波、包絡檢波、檢波后積累、頻域cfar處理、速度定心、速度跟蹤、角跟蹤、 ?濾波等，然後給出了信號處理流程。
  10. The squall line is a kind of instable and strong convective weather caused by the air with upper - layer dry and lower - layer wet in front of the upper - troposphere trough

    分析指出，該颮線系統是由高空槽前型的上干下濕引起的不穩定強對流天氣。
  11. However, df pre - processing is not required in a interferometer direction finder. it only makes use of the phase relations or differences of sensors disposed at different position. azimuth and elevation are caculated from the phase differences or displayed directly on a crt drived by the voltage or current from the phase differences

    干涉儀測向不必進行測向信號預處理而是直接或間接求取在空間上分開的傳感器上感應電勢之間的相位關系，即干涉相位差，方位角或仰角是直接由干涉相位差計算得到，或將兩基線正交的天線陣的干涉相位差轉化為驅動電壓（電流）分別加到crt陰極顯示器的垂直偏轉線圈和水平偏轉線圈，模擬顯示出來波方位，干涉儀測向為典型的相位測向方法。
  12. Type plane wave incidence and the input admittance of cylindrical monopole antenna, it is testified that the proposed method is more accurate than the conventional square contour integration method

    型平面波的散射電流以及單極細圓柱形天線的輸入導納，對所提出的方法作了驗證，證明了該方法比常用的矩形積分迴路法對細導線上電流的模擬要精確得多。
  13. This essay stems from the problem with which tianjin port is confronted, contributes to the research method and theory on how to allocate equipment in order to optimize the efficiency of the loading and unloading assembly line. up to now, there is no a ripe method on that above. so, this paper applies optimum method and economics theory, attempts to set up a series of analyzing methods and optimum models to improve the efficiency of dock loading and unloading, and reduce the operating costs, and increases more profits

    本論文從天津港生產中的現實問題出發，結合發達國家港口設備管理的經驗與中國港口的實際，通過對港口裝卸作業系統地分析，逐步縮小系統的研究范圍，確定提高某一碼頭作業線的機械裝卸效率為研究目的，建立一個作業線合理選擇工藝流程和配機的數學模型，並提出相應的解法。
  14. Amada is a specialized japanese company in manufacturing sheet metal working equipment, its main products are nc shearing machines, nc punching presses, nc press brakes, large - sized laser cutting machines and fully automatic sheet metal working line

    天田（ amada ）公司是日本專業生產鈑金加工設備的公司，其產品有數控剪床、數控沖床、數控折彎機、大型激光切割機和全自動鈑金加工流水線。
  15. The profession produces the carvings, stone material craft, cylinder of various marble, granite, stone material and put together various shape handicraft product of flower, geomancy ball. . etc. and special design etc., our products reserve a traditional stone material not only of natural and elegant in the meantime in keeping with market development trend, guide a star class cabaret, market and transact building and family of green decorate current

    專業生產各種板材、圓柱，線條、拼花、風水球、以及特別設計的各種造型工藝品等，我們的產品不但保留傳統石材的天然高雅同時適合市場發展趨勢，引領星級酒店、商場、辦公樓及家庭的綠色裝飾潮流。
  16. This paper introduces all kinds of calculation methods of settlement and the popular research theory at present, expresses the rheology theory and its developing trend in detail. based on the rheology theory, the theory of linear - visco - elastic - plastic model is put forward to forecast the long term creep settlement of soft soil in the metallurgy industrial region at the backward position of haihe river in tianjin

    本文詳細介紹了國內外關于沉降計算的研究現狀，以及當今流行的研究理論，著重介紹了流變理論的研究現狀及其發展趨勢，並在此基礎上提出了用線性粘彈塑性模型理論來預測天津市海河下遊冶金工業區軟土長期蠕變。
  17. According to the tracking principle being exploited, we make the simulation plan and flow chart, and emphasis on discussing the facts that the tracking receiver in antenna systems affects the capturing and tracking systems. the data simulation model of the tracking receiver is built up. using matlab simulation, we verify the fact, investigate the accuracy factors and finally conclude all in practice

    在自動跟蹤系統中，跟蹤接收機作為核心控制單元，根據所採用的跟蹤方式的原理，制訂模擬方案，確定模擬流程，重點討論了天線系統跟蹤接收機性能對捕獲跟蹤系統的影響，研究並建立了跟蹤接收的數字模擬模型，通過matlab模擬軟體系統進行了模擬分析和驗證，研究了各種參數對系統精度的影響，得到了有實用價值的結果。
  18. The antenna driver is the key part of the secondary planet system. in this paper full - digital ac - servo control system based on dsp ( digital signal processor ) is adopted to control antenna rotating, which improves greatly system reliabity and stability

    本文就是為解決某型號衛星天線的穩定旋轉而專門設計的以電機專用控制晶元dsp為控制核心的全數字化交流伺服驅動系統，從而極大提高整個系統轉速穩定度和可靠性。
  19. Its typical applications include mobile games, mobile video program selection, mobile video chatting, and mobile singing, etc. with great improving of the value - added business in the aspects of technical basis and transferring velocity, the flow - media becomes available in the mobile networks, and is a new pet in the value - added business of wireless communication

    手機流媒體是一種實時傳輸數據的方法，通過移動網路在移動手持終端上採用流媒體技術實現的應用，典型的應用實例包括移動游戲、移動視頻點播、移動視頻聊天、移動卡拉ok等。隨著增值業務在技術基礎和傳輸速率方面的極大改善和提高，流媒體在移動網路里也正變得切實可行，成為無線增值內容提供的業務新寵兒。
  20. Ac lines become inefficient at distances around 1, 200 kilometers, because they begin to radiate the 60 - hertz power they carry like a giant antenna

    傳輸距離在1200公里左右時，交流線路的效率會降低，因為線路會開始輻射出自己所輸送的60赫茲電力，就像支超大型天線。
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