焦距比 的英文怎麼說

中文拼音 [jiāojùbǐ]
焦距比 英文
focal distance ratio
  • 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...
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  • 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 darker the screen will have better color - contrast. b turn on the display and check the sharpness of the text on the four corner. the sharper the text means the higher color - contrast, focal length and higher frequency

    B開機后，仔細查看顯示器四角的文字是否夠清晰，尤其是在高解析度底下，如果高解析度情況下，而顯示器四角的文字清楚，表示該顯示器對比及焦距不錯且頻寬夠寬。
  3. This paper describes a new method to select these parameters, including to determine the focus length, relative aperture and field of view of new optical system in design by means of making reference to previous star sensors and their optical systems ; to forecast the acquiring probobility of star sensor in accordance with selected param eters ; to determine the principal design wavelength and spectral coverage by means of integrat ing the spectrum of stars

    本文介紹一種確定光學系統參數的新方法，包括通過參考比較已有星敏感器及其光學系統特性來選取新光學系統焦距、相對孔徑和視場；根據所選取的參數預計星敏感器的捕獲概率；採用綜合恆星光譜方法確定光學系統中心波長和光譜范圍。
  4. Features of dr1600 include automatic selection of both the correct reduction ratio and the proper focus

    Dr1600一大特點是能夠自動選擇正確的縮圖比例及準確的焦距。
  5. 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。
  6. 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。
  7. ( 2 ) the mechanism of laser triggered multi - stage multi - channel switch was studied. the results of experiments and calculations show that the delay and jitter decreased exponentially as the working voltage increased. the delay and jitter decreased as the gas pressure increased ( t _ ( d ) p ~ ( - 1 ) if e / p > 0. 8 ( e / p ) _ ( lim )

    B ：觸發延遲與聚焦透鏡焦距「 z一pinch ， ，加速器閉合開關技術研究之間存在一定的依賴關系，以nz為工作介質時焦距增長觸發延遲上升，欠壓比越大觸發延遲對焦距的依賴關系越弱;以nz / sf 。
  8. A near - sighted eye has a shorter focus than a normal eye

    近視眼比正常的眼睛有較短的焦距。
  9. Numerical result illustrates that focal length becomes longer when incident wavelength becomes shorter, however the relationship between focal length and incident wavelength is n ' t absolute inverse ratio, it is that the increasing of focal length is faster than the decreasing of incident wavelength. at the same time the numerical result also show that scalar theory ca n ' t be used in the rigorous analysis of the dispersion property of subwavelength diffractive microlens

    然後研究了亞波長衍射微透鏡的色散特性，表明亞波長衍射微透鏡的焦距隨著波長變短而增加，但是波長與焦距之間並非簡單的完全反比例關系，而是隨著波長的減小焦距增加得更快，同時指出標量理論已不能準確分析亞波長衍射微透鏡的色散特性。
  10. In order to measure the focal length of lens automatically, linear ccd is used as receiver on behalf of eyes on the basis of original experiment equipment measuring the focal length of lens. a kind of method determining the focal plane automatically is put forward and analysed theoretically in this text, based on the theory of point spread function

    本文基於點擴散函數理論，提出一自動檢焦方法，對該方法進行理論分析，並通過實驗驗證了該方案的可行性;確定焦面后，在處理測量數據過程中，文中對常用的幾種方法進行了比較和分析，最後採用質心法來實現對透鏡焦距的測量。
  11. The system is with a broad spatial frequency and focus ranges

    本系統測量的空間頻率范圍和焦距范圍都比較大。
  12. Different from 35 mm slrs, when any of dynax series af lenses is attached to the dynax 7d, the focal length will be roughly 1. 5 times longer than those stated

    鏡頭焦距是指鏡頭安裝在35mmslr相機機身時的焦距。若安裝在dynax7d數碼單鏡反光相機上，實際焦距約比所述焦距長1
  13. The working range of acoustic imaging system is short generally. so focusing has to be taken into account, or the result will be bad

    聲成像系統的作用距離通常都比較近，這種情況下就必須要考慮近場聚焦的問題，否則波束的指向性會老化。
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