等焦距 的英文怎麼說

中文拼音 [děngjiāojù]
等焦距 英文
parfocal
  • 等 : Ⅰ量詞1 （等級） class; grade; rank 2 （種; 類） kind; sort; type Ⅱ形容詞（程度或數量上相同） equa...
  • 焦 : Ⅰ形容詞1 （物體受熱失去水分 呈現黃黑色並發硬、發脆） burnt; scorched; charred 2 （著急） worried;...
  • 距 : Ⅰ名詞1 （距離） distance 2 （雄雞、雉等的腿的後面突出像腳趾的部分） spur （of a cock etc ）Ⅱ動詞...
  • 焦距 : [光學] focal distance; focal length
  1. 1, cut over a head : bring up to combine the applied technique most and early for the toshiba, and is also current usage to is the most extensive. he adopts a laser head, and prepare the different slice of 2 focal distances the sony for cut over, passing the conversion differently focusing the coming respectively reading dvd with cd, its shape looking with double head to resemble respectively, because can see two sets focuse the, laser head to interiorly can t see. he reads the signal quantity is higher, but because of want the conversioning to focuse the, therefore the cost belong to the inside and so forth of level, and recognize the dish speed slow, same the implicit mechanical trouble rate is high

    1切換雙鏡頭：為toshiba最早提出並應用的技術，也是目前使用最廣泛的。他採用一個激光頭，分別準備2個焦距不同的鏡片切換，通過轉換不同的聚焦鏡來分別讀取dvd和cd ，它的外形看起來與雙頭的sony相似，因為只能看到二組聚焦鏡，激光頭在內部看不見。他讀取信號質量較高，但由於要轉換聚焦鏡，所以成本屬于中等水平，認盤速度較慢，同樣隱含的機械故障率比較高。
  2. The influence of changing design parameters on diffractive microlens is investigated. the effects of changing design focal length and microlens material refractive index on diffractive efficiency and airy diffraction disc radius are presented. the numerical results are discussed by qualitative analysis

    首先研究了設計參數變化對衍射微透鏡的影響，給出了設計焦距和透鏡材料折射率變化對衍射微透鏡衍射效率、愛里斑半徑等的影響，並對分析結果作了定性討論。
  3. Date and time, camera settings ( exposure mode, shutter speed, aperture value, exposure compensation value, metering method, flash on off, camera sensitivity, white balance setting, focal length, etc. ), color space

    日期及時間、相機設定（曝光模式、快門速度、光圈值、曝光補償值、測光方法、開啟關閉閃燈、相機感光度、白色平衡設定、焦距等） 、彩色色域
  4. Because the air - borne imaging system is required a far acting distance and the focal length of its optical system is long. influenced by the unsteady or moving platform mounted on plane, the change between the frames of image sequence is more. problems of image fuzziness and instability tend to be striking out, which becomes a bottleneck restricting the air - borne reconnaissance, collimation, evaluating beat effect

    機載光電成像系統，由於要求作用距離遠，故其光學系統焦距長，受其載體姿態變化和振動的影響，圖像序列幀間變化過大，造成觀察者覺得模糊、不穩定，己成為制約空中偵察、瞄準、打擊效果評估等功能的瓶頸。
  5. The system is calibrated and computed, and the calibration parameters such as equivalent foci f, distance d between two cameras are designated. these parameters is the internal parameters in the system, and can be calibrated through different world coordinates

    對系統進行標定計算，指出標定參數等效焦距f ，兩攝像機光心的距離d ，這些參數為系統內部參數，可以通過相對不同的世界坐標進行標定，即相對標定。
  6. Stores photographic data of up to 7 rolls of 36 exposures on aperture, lens focal length, exposure compensation exposure bracketing increments, shutter speed, flash compensation flash bracketing increments ( including flash on off status ), exposure mode, and metering mode

    可以儲存7卷36格菲林的光圈、鏡頭焦距、曝光補償包圍式曝光增減值、快門速度、閃燈補償包圍式閃燈增減值（包括：閃燈開啟開關狀態） 、曝光模式及測光模式等拍攝資料
  7. With the focal property and the aberration correcting ability, the varied line - space ( vls ) grating has been successfully used in the areas of astronomical physics, synchrotron radiation, fiber communications and so on. therefore, the ruling of the vls grating is one of the greatest significant tasks of the grating fabrication

    變柵距光柵具有像差校正、自聚焦等優點，在天文物理學、同步輻射、光纖通信等領域有著重要的應用，因此，變柵距光柵的刻劃技術一直是國際光柵製作領域的重大課題之一。
  8. Firstly, the system is divided into many modules according to different point of view ; secondly, to the hardware equipment - vidicon, lenses, revolver, shield and decode device, their principle of work has been explained ; thirdly, according to image identification experience and other indexes of the system, the focus of the lenses and relative aperture are calculated, and the type of the camera is confirmed, at the same time, the energy of infrared lamp is also computed in the thesis ; at the same time, synthesis control box is devised

    首先，按照角度的不同，將系統劃分成許多模塊。其次，對硬體設備? ?攝像機，鏡頭，雲臺，防護罩，解碼器等的工作原理進行了闡述，再次，以人的成像辨認的經驗判據為依據，結合系統的其它指標，設計計算出鏡頭的焦距f 、相對孔徑d ，同時確定攝像機的型號，並計算出紅外燈光源。最後，對綜合控制箱進行設計，指出了設計的意義，實現的功能，並附上了綜合控制箱的外形圖。
  9. The paper has introduced a new means on the automatic focus that take advantage of the video peak to change the position of the focusing lens to achieve a clear picture

    摘要介紹了一種新型的自動調焦的方法，它利用電視跟蹤系統視頻信號的峰值變化控制調焦鏡組，來調整由於目標距離、溫度等變化引起的成像焦面變化，得到清晰圖像，完成電視自動調焦。
  10. The conditions for the long distance propagation are discussed in detail. the results are useful in determining the appropriate size of the channel to be preformed and can guide the future research in ultrashort intense laser propagation

    首次利用自恰電子空腔效應分析了超短超強激光在低密度等離子體中的長距離傳輸和自聚焦效應，詳細分析了長距離傳輸的條件。
  11. A visual device with the function of pitching and tilt and a control system to camera with the function to adjust the aperture and focus in time have designed as well as a processor of image to capture, process and matching have been also designed

    基於主動視覺，設計了一個具有上下俯仰、水平轉動的視覺裝置，和能夠實時調整光圈、焦距等成像參數的攝像頭控制系統。建立了一個能夠進行實時圖像採集、圖像處理，目標匹配的圖像處理系統。
  12. It adopts 60w radio frequency laser producer and cti mirror system imported from america. the electric scissor lift table realizes precise control of focus. infrared ray - demonstrating aiming device can position the marked object more conveniently. it is a comparatively high - quality marking machine, characterized by its high efficiency and convenience, zero materials, zero pollution, and zero poison. applied fields : marking of many non - metal materials, such as cloth, leather, acrylics, wood, paper, pacage of food, electronics, and medicine, etc

    該機使用美國進口60w射頻激光器和cti振鏡系統，電動升降平臺平實現焦距精確控制，用紅光指示結準器，更方便打標對象的定位，具有高效便捷無需耗材，無毒無污染等特點，是一款性價比較高的標記設備。
  13. In the design of holographic disc storage system, we first proposed an optimized reflection configuration for sam fourier - transform hologram storage. then we designed and manufactured an asymmetrical fourier transform lens pair, which matched the parameters of slm and ccd and the system requirements. in order to achieve 1 : 1 pixel - matching of high resolution data pages ( 1024 768 ) between slm and ccd, the two lenses were designed and optimized in an iterative manner, and the combination of them reached satisfactory results with eliminated aberrations that can meet the design requirements

    首先提出來用於反射式傅立葉變換體全息存儲的空間-角度復用的光路機構，然後按照slm和ccd的光學參數以及系統的工作要求提出傅立葉變換鏡頭的設計條件，為實現在1024 768幅面的1 : 1像素匹配，設計採用非對稱結構的傅立葉變換鏡頭，可以解決slm與ccd像素尺寸相差比較大的問題，使兩個鏡頭的焦距比同slm和ccd的像素尺寸比相等。
  14. If very expensive, big, and heavy, may be almost as good and almost as fast at any given focal length as cheap fixed primes

    如果很貴，很大，很重，那麼它幾乎可以做到和那些等焦距廉價的定焦一樣快和好。
  15. Ultrashort intense laser pulse propagation in low - density plasmas and air xiao yuan, doctor of philosophy, 2002 dissertation advised by : lu baida, professor of physics the study of ultrashort intense pulse laser beams in low - density plasmas and air is relevant to a wide range modern application

    超短超強脈沖激光在低密度等離子體和空氣中的非線性傳輸是當今強激光與物質相互作用研究的一個重要課題。本論文闡述了超短超強激光在低密度等離子體和空氣中的長距離自聚焦和自導引效應。
  16. But the implementation of traditional wfcs in an optical system is difficulty, so the applications is limited. in 2000, a novel wfcs comprising a distorted diffraction grating ( dgwfs ), simple optics and a single camera has been described by blanchard

    2000年， blanchard等提出了一種新型的波前曲率傳感器，它利用二次扭曲光柵和短焦距透鏡密接使用，來實現波前曲率測量。
  17. The variable - focus liquid microlens based on electrowetting on dielectric ( ewod ), which has the outstanding advantages of simple structures, low power dissipation, easily tunable of focal length, etc., is most attractive

    在提出的各種新型的可變焦微透鏡技術中，基於介質上電潤濕的微流體透鏡由於其結構簡單、功耗低、調節焦距方便等眾多突出的優點而被人們所重視。
  18. Experimentally, the plasma produced by cable plasma gun ( c - gun ) and dense plasma focus ( dpf ) was measured by the laser differential interferometer system. the clear interference patterns were acquired at different time. the contour maps of line integral density and curves of radial local density at different height above nozzle were presented

    實驗上，對等離子體斷路開關中的電纜等離子體槍（ c - gun ）和等離子體焦點裝置（ dpf ）產生的等離子體進行了測量，獲得了對應不同時刻的清晰的干涉圖像，給出了線積分密度等值線圖和距噴口不同高度處的徑向密度分佈。
  19. The laser beam spot evolution and electron density in the guiding range are evaluated with the burn pattern and the measured conductivity. the above results will be useful in ultrashort laser pulse amplification and future research in ultrashort intense laser propagation in plasmas and ionizing gases

    以上研究結果對于超短脈沖激光放大技術研究以及超短超強脈沖激光在低密度等離子體和空氣中長距離傳輸和聚焦研究等具有重要的實用參考價值。
  20. High resolusion optical systems including refractors, catadioptric lens and reflectors used to observation from the satellites to the earth is presented and the problems in design is discussed

    摘要對用於衛星對地觀測用各種高解析度長焦距光學系統，如折射系統，折反射系統和反射系統等各種形式和設計問題進行了分析和討論。
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