focal length 中文意思是什麼

focal length 解釋
焦點距離
  • focal : adj. 1. 【物理學】焦點的，（集中）在點上的，有焦點的。2. 【醫學】病灶的，病灶性的。adv. -ly
  • length : n. 1. 長，長度，長短。2. （時間的）長短，期間。3. （賽艇的）一艇的長度；一馬的長度。4. 程度，范圍。5. 【板球】球程；投至適當距離的球。6. 【語言學】音長。7. 一段，一節。
  1. The diameter of a sphere is four times the focal length of a concave mirror cut from it

    凹面鏡如果是從圓球上切下來的，圓球的直徑會是凹面鏡焦距的四倍。
  2. Whereas art historians will dilate on the symbolism of capturing the visual world in the convex mirror prominently displayed on the rear wall, i will be concerned instead with its optical properties, such as its focal length and light - gathering power

    藝術史學者會注意後面墻上那面醒目的凸面鏡，對它捕捉了視覺世界的象徵意義加以熱烈討論，而我則會專注於它的光學特性，如焦距與聚光能力。
  3. A typical lens has a focal length(f)of 625 mm.

    常見鏡頭的焦距（f）為625毫米。
  4. The focal length of a given lens is different for different colors.

    一個特定的透鏡的焦距因顏色的不同而不同。
  5. The focal length of the camera lens plays an important role in photo criteria.

    攝影機鏡頭的焦距在攝影規范中起著重要的作用。
  6. The unsteadiness of air becomes prohibitive only if instruments with large focal length are used.

    只有在使用長焦距的儀器時，才不允許空氣的不穩定。
  7. The focal length of the conelensing lens should be such that the image of the source just fills the projecting lens.

    聚光透鏡的焦距應使光源的像正好照滿放映透鏡。
  8. If the objective lens is closer to the compact disk than the focal length of the object lens, then the cylindrical lens creates an elliptical image on the photodetector array

    如果物鏡與光盤之間的距離短於物鏡的焦距，柱面透鏡就會使在光電探測器陣列上的成像變成橢圓影像。
  9. If the objective lens is further away from the compact disk than the focal length of the object lens, then the cylindrical lens again creates an elliptical image on the photodetector array

    如果物鏡與光盤之間的距離長於物鏡的焦距，柱面透鏡也會使在光電探測器陣列上的成像變成橢圓影像。
  10. Of course, if the disk is right at the focal length of the objective lens, then the cylindrical lens does not affect the image and it is perfectly circular

    當然，如果正好處於物鏡焦距位置，柱面鏡就不會影響到光電探測器上的成像，因而會獲得一個完美的圓性影像。
  11. Like the zeiss lenses for motion picture, zf lenses feature unusually high mechanical quality, fixed focal length, very precise manual focussing, reliability, and exceptional durability

    如同電影用的zeiss鏡頭， zf鏡頭的特色就是非常高的機械品質，固定焦長，非常準確的對焦系統以及高度可靠性，並且非常耐久。
  12. 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。
  13. 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
  14. 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。
  15. 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
  16. Fundamental standards for optics - determination of focal length

    光學基礎標準.焦距測定
  17. 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。
  18. Second, for robust estimation of camera parameter, we take into account overall color change and focal length adjustment between overlap images

    另外為了對圖像進行可靠的拼接，演算法根據普通數字相機的特性，考慮了圖像整體色彩變化與焦距調整。
  19. The results of computer simulation show that both the radius of disk and the depth of focal length decrease as increasing incidence wavelength, meanwhile, the intensity of disk is enhanced

    數值計算了圓形透鏡的色散，結果表明：焦斑的半徑和焦深隨入射波長的變大而減小，光斑的強度隨入射波長的變大而增強。
  20. Spot diameters of just a few thousands of an inch can readily be attained with convenient short focal length lenses.

    用普通的短焦距透鏡不難得到直徑只有幾十微米的光點。
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