focus length 中文意思是什麼

focus length 解釋
焦點長度
  • focus : n (pl focuses foci )1 【物理學】焦點。2 【物理學】焦距;聚焦,對焦點,配光,對光。3 (活動興趣...
  • 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. Because of the limit of the length on this paper, the study shall only focus on the principle of voice production, training of voice production, and application of head voice and chest voice

    由於篇幅有限,本文僅從戲曲聲樂的發聲原理、發聲訓練、真假聲運用等方面分別探討之。
  2. The work done in this paper is mainly as follows : ( 1 ) the wide beam should intrude to the wall at some length to make the flexural stress uniform along beam section width, thus make full use of the beam ' s bearing capacity and avoid the shear failure in the concrete joint. and it also prevents stress focus and concrete crack in the local shear wall

    關于寬梁與薄墻肢節點,可以得出以下幾點初步結論:寬梁應該深入墻肢一定的深度,以使寬梁截面的彎曲應力沿著梁截面寬度分佈均勻,充分發揮寬梁的抗彎能力,同時避免節點區混凝土的剪切失效,也避免剪力墻的局部因為受到的應力過大而拉裂。
  3. Data that focus not on age but on length of service give similar results and confirm that the frequency rate of work accidents decreases with length of service

    事故的次數的多少與人的年齡無直接關系,但與服務的年限的長短有關,事故的頻率隨著服務年限的增長而減少。
  4. 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。
  5. In this dissertation, we first state briefly the developmental history, the present condition of queueing theory, the markovization of queueing system and the research situation for several types of ergodicity, and induce the preliminary knowledge of markov processes and markov skeleton processes, and then the dissertation discusses mainly focus on several problems which exist in researching gi / g / l queueing system, which are categoried as follows : ( i ) non - equilibrium theory for gi / g / 1 queueing system ( l ) we present the equation which satisfies the transient distribution of l ( t ) for the three special cases m / m / 1, gi / m / 1 and m / g / 1 queue of gi / g / 1 queueing system, and proves that the length l ( t ) of gi / g / 1 queueing system satisfy three types of equation, and their minimal nonnegative solution are unique bounded solutions

    歸納了馬爾可夫過程和馬爾可夫骨架過程的有關的初步知識。然後,本文重點討論了當前在gi g 1排隊系統中待研究的如下幾個問題: (一) gi g 1排隊系統的非平衡理論( 1 )給出gi g 1排隊系統及其三個特例m m 1 , gi m 1和m g 1排隊系統的隊長l ( t )的瞬時分佈所滿足的方程。證明gi g 1排隊系統的隊長l ( t )滿足三種不同方程,並且是這些方程的最小非負解,也是唯一有界解。
  6. Because of the lack of the length information of the target, we need the measurements from two stationary infrared sensors at least if we want to locate the target that we focus on

    要實現靜止的紅外探測器的定位功能,由於只能得到目標的方位數據,無法獲取距離信息,所以至少需要兩站的方位數據協同進行定位。
  7. The results show that radius and position of focal beam waist, focal angle and focal depth describe focal beam properties. they are determined by waist and rayleigh length of beam before focusing, the position and focal length of focus mirror

    聚焦光束束腰位置和半徑、聚焦角、焦深、焦點偏移量以及焦點漂移量是描述光束聚焦特性的主要參數,它們由四個參量共同決定,分別為聚焦前光束的束腰半徑、瑞利長度和聚焦鏡的焦距以及聚焦鏡到光束束腰位置的距離。
  8. At the beginning of counselling, the counsellor will work out a counselling plan with the client, defining what problems they will focus on, and agreeing on an estimated number of interviews and length of period required

    輔導計畫及協議在輔導開始時,輔導員會與當事人一同擬訂輔導計畫,訂定將會透過輔導一同處理的問題,及大概所需面談的次數及期限。
  9. 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。
  10. In this paper, the main frame of the graph data collection system of dmas is provided, the basic principle of the hardware system is analyzed, and the functions of automatic focus, automatic sampling, and picture joint are described at length

    本文主要介紹了dmas智能化鐵譜分析系統的圖像數據採集系統的基本框架,分析了系統的硬體原理,詳細描述了自動聚焦、自動采樣、圖像拼接等具體功能的實現。
  11. U _ ( th ) rise linearly as the ( the volume percentage of sf _ ( 6 ) in mixtures ) increased. when the focal length of focus lens increased the delay and jitter were increased if n _ ( 2 ) was used as dielectric

    放電通道數大於等於3 ,具有極寬的工作范圍( 1 %編一100 %幾) ;欠壓比為20 %時,抖動極差為sns 。
  12. As far as input coupling devices concerned, we design a feasible taper coupler by means of the theory of waveguide coupling and outside cavity waveguide laser and make decision of the sizes of the lens and the taper coupler, and the relative distance of them. the focus of the lens is 65mm and the radius is 5mm. the length of the taper coupler is 15mm, and the radiuses of the input and output ends separately are 17mm and 0. 65mm

    在輸入耦合器方面,藉助于波導耦合和外腔式波導激光器的相關理論,設計了工藝上可行的錐型耦合器,確定了透鏡、耦合器的尺寸以及耦合器與透鏡的相對位置:耦合透鏡的焦距為65mm ,直徑為srnm ,耦合器的長度為15mm ,輸入端直徑為17mm ,輸出端直徑為0
  13. We analyze the generation of external cavity frequency - doubling with knbo3 crystal theoretically. in order to get the second - order nonlinear conversion from 858nm to 429nm with knbo3, we use non - critical type - i phase - matching to avoid the walk - off effect the corresponding optimum focusing condition is as followings : double refraction parameter b = 0, focus parameter = 2. 84, optimum phase mismatch parameter = 0. 574. based on the theoretical analysis and numerical calculations, we obtain the ideal nonlinear conversion coefficient about 1. 45 % / w with crystal length of 7mm and 2. 07 % / w with crystal length of 10mm at the phase - matching temperature around 23. 50c

    根據對其倍頻原理及性能的分析討論,在用該晶體完成波長從858nm到429nm的二階非線性轉換時,採用非臨界相位匹配條件(此時無離散效應,對應的雙折射參數b = 0 ,共焦長度為= 2 . 84 ,最佳相位失配因子為= 0 . 574 ) ,在相位匹配溫度約為23 . 5時,理論上通過計算得到理想情況下非線性轉換系數約為1 . 45 / w (長度為7mm ) , 2 . 07 / w (長度為10mm ) 。
  14. Chapter 6 makes a design which points to the controller & driver for the lcos chip, this work are based on the chapter 5 and 6, take the length of this paper into account, we mainly focus on the core part of the controller & driver, which is the fpga logic controller

    第六章針對hmd的lcos像源的驅動控制器進行了設計,本章工作以第四章和第五章內容為基礎,限於篇幅起見,主要圍繞控制驅動器的核心部分fpga邏輯控制器的設計進行闡述。
  15. The thermal effect was studied. e designed a simple method to measure the thermal focus length of the crystal and gavehe thermal focus length of yb : gdcob in the experiment

    分析了影響晶體熱性能的幾個因素,設計了一種測量熱焦距的簡單方法,並測得了yb : gdcob晶體的熱焦距,進行了理論分析。
  16. When it ' s important to maintain or shorten the project length, you ' ll want to focus first on shortening the critical tasks with the longest duration

    在必須保持或縮短項目長度時,首先想到的重點應該是縮短工期最長的關鍵任務。
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