正向光性 的英文怎麼說

中文拼音 [zhēngxiàngguāngxìng]
正向光性 英文
positive phototaxis
  • : 正名詞(正月) the first month of the lunar year; the first moon
  • : Ⅰ名詞1 (照耀在物體上、使人能看見物體的一種物質) light; ray 2 (景物) scenery 3 (光彩; 榮譽) ...
  • : Ⅰ名詞1 (性格) nature; character; disposition 2 (性能; 性質) property; quality 3 (性別) sex ...
  • 正向 : [電學] forward direction正向傳導 forward conduction
  1. To overcome the disadvantages of the linear calibration methods such as mlr and pls, least - squares support vector machine ( ls - svm ) is introduced to nir quantitative calibration in this thesis. for a set of diesel cetane number ( cn ) samples, the ls - svm model obtains the best performance in the cn prediction, compared with the mlr and pls model

    為克服mlr與pls等線方法的局限,本文將最小二乘支持量機( ls - svm )演算法用於近紅外譜的定量校,並以一批柴油十六烷值樣品數據為例對以上方法進行了比較。
  2. Chapter 3 erected the relationship between refraction error and cornel ablation depth in theory. the paper proposed various mathematical models which can be used for proceed the simple myopia, simple hypermetropia, compund myopia astigmatism, compund hypermetropia astigmatism, simple myopia astigmatism, simple hypermetropia astigmatism, mixed astigmatism. the influence of the astigmatic axis and the degree of astigmatism on the correction field is discussed. wavefront aberration guided excimer laser cornea ablation is a main method of customised corneal ablation

    以數學的方法研究出了屈單純近視、屈單純遠視、復近視散、復遠視散、單純近視散、單純遠視散、混合的物理模型;並揭示了不同軸位的轉換規律,對不同散情況下的初始角膜兩個不同方的曲率半徑和手術后最終的曲率半徑作了定量的研究。
  3. To women who please me only by their faces, i am the very devil when i find out they have neither souls nor hearts - when they open to me a perspective of flatness, triviality, and perhaps imbecility, coarseness, and ill - temper : but to the clear eye and eloquent tongue, to the soul made of fire, and the character that bends but does not break - at once supple and stable, tractable and consistent - i am ever tender and true

    「對那些靠容貌吸引我的女人,一旦我發現她們既沒有靈魂也沒有良心一旦她們我展示乏味淺薄,也許還有愚蠢粗俗和暴躁,我便成了真的魔鬼。但是對眼明口快的,對心靈如火的,對既柔順而又穩重既馴服而又堅強,可彎而不可折的格我會永遠溫柔和真誠。 」
  4. Further, their luciferase activities were determined in ty medium, and showed that tn5 - 1063 was inserted directly into loci downstream of promoters in 042bm genome

    它們都表現發酶活,表明轉座子插入到基因組中的某個啟動子下游。
  5. And for all his conceit and his german grumpy irony, he was pitiful with his flattened locks on his forehead and his wisps of uncombed hair sticking out behind. though he tried to conceal it under a semblance of anger and contempt, he was visibly in despair that the sole chance left him of testing his theory on a vast scale and proving its infallibility to the whole world was slipping away from him

    盡管他很自信,具有德國人的好抱怨的愛譏諷的格,連同他那梳的鬢角和腦后一撮撮翹起的頭發,都使他覺自己可憐,雖然他把這些隱藏在自己的憤怒和蔑視之下,但是他陷入絕望,因為用大規模的實驗來檢驗和全世界證明地的理論的的唯一機會,現在從他手中失去了。
  6. The most achievement is that we firstly obtain the analytic accurate solution of the modal fields of the waveguide structure and find some available character : ( 1 ) the different uniaxial crystal materials have the different propagation properties ; ( 2 ) when the optical axis of the crystal is on the plane that is made up of the normal direction of the waveguide plane and the propagation, there are te mode and tm mode in this special waveguide, but the principal mode is different of the character of the uniaxial crystal, the principal mode is the principal mode of te mode for the negative uniaxial crystal, but the one of tm mode for the positive uniaxial crystal ; ( 3 ) when the crystal optical - axis parallel to the waveguide plane, for the positive uniaxial crystal material, the principal mode of the waveguide is a te wave, which can be excited by the light at any frequency ; when the light frequency satisfies a single mode propagation condition, there will be only the principal mode propagating in the waveguide, otherwise some of the higher order modes can be excited, which are neither te modes, nor tm modes, but the hybrid guided modes

    本文就是在此背景下,利用金屬波導和單軸晶體的一些特,結合麥克斯韋方程組和波導的邊界條件,從三種不同的情況研究了在對稱平面單軸晶體金屬波導(波導層是單軸晶體,兩個波導界面均為金屬)內的傳輸特,其主要貢獻為,首次解析地得到了這種波導結構下模式場的精確解,並發現了一些有用的特: ( 1 )模式場的質因單軸晶體的質不同而異; ( 2 )當單軸晶體軸位於波導界面法方與傳輸方構成的平面內時,波導中傳輸te波和tm波,只不過其主模因單軸晶體的質不同而異,當波導層介質為負單軸晶體時,波導主模是te波主模,而波導層介質為單軸晶體時波導主模是tm波主模。 ( 3 )當單軸晶體軸位於波導面內時,對于單軸晶體,波導的主模是橫電波te _ 0模,任何頻率的波均可激勵該模式;當波波長滿足一定條件時,波導內傳輸單模,否則,將激勵起高階模式,高階模即匪te波,也匪tm波,而是兩者耦合而成的混合模。
  7. However, the msw - based mo devices haven ’ t still been applied extensively up to now because of low bragg diffraction efficiency. the generation and propagation characteristics of magnetostatic forward volume waves ( msfvws ) under nonuniform bias magnetic field and the bragg diffraction efficiency of gows with the msfvws are theoretically studied in this paper

    本論文主要從理論上研究不均勻場中靜磁體波( msfvw )的激發與傳播特,以及不均勻偏置磁場在提高靜磁波對導波的bragg衍射效率方面所起的作用。
  8. It was from this perspective that hara takashi put forth his peculiar political idea that " the strategy against the qing dynasty underscores dealing with europe ; and the strategy against europe underscores protecting japanese interests. " accordingly, when he witnessed that the united states was flourishing and gradually americanizing the world, hara naturally paid more attention to america and realized the gravity of japan ' s keeping good relationship with the united states in international affairs

    因為有這樣的思想認識,所以在歐洲列強占據對中國外交的主導地位時,原敬提出「對清政略既是對歐政略,對歐政略既是護國政略」的獨特的國際政治思想,而當他親眼目睹美國國力的蒸蒸日上和世界在美國化時,自然會把關注的目美國,較早地意識到在國際事務上日本需和美國處理好關系的重要
  9. Then i consider a correlative problem : where m, > 0, s is a bounded domain with smooth boundary in ; v is outward normal vector on ; f ( s ) is continuous function and satisfies some increasing conditions ; u0 ( x ) is a positive function satisfying some compatibility conditions, to obtain the blow - up conditions of the positive solution using the method of subsolution and supersolution, extend the result of song and zheng

    )上的單位外法; u _ 0 ( x )是的函數且滿足一定的相容條件:討論m 1的情況時,在何種條件下使得問題的解整體存在或是在有限時刻爆破。主要採用上下解的方法來得到結論。隨后考慮相關問題:其中m , 0 ,為r ~ n ( n 1 )中的有界域,具有適當滑的邊界(
  10. Ring laser gyro and fiber optic gyro ( totally called optics gyro ) are indispensable factors that inertial technology stride forward optic gyro ( including ring laser gyro and fiber optic gyro etc ) is an angle rate sensor, which is on the base of sagnac generalized relativity effects it represent the new trend of development of inertial instrumentand component.,

    目前,高精度、高可靠、低成本、小型化、數字化成為了慣技術領域發展的方。激陀螺、纖陀螺的產生與發展是慣技術朝此方邁進不可缺少的的因素。學陀螺是基於薩格奈克( sagnac )效應的角速率傳感器。
  11. Dealing with faces illumination variation based on dynamic directional gradient vector flow snake and gamma algorithm a new dynamic directional gradient vector flow snake ddgvf snake algorithm was presented which can detect the image shadow and highlight contours of the unknown face images. according to the given standard face database, the image gray median could be c.

    使用一種動態方梯度矢量流snake ddgvf snake演算法來檢測未知圖像的陰影和高區域,根據已知的標準人臉圖像庫中圖像的灰度分佈,計算出灰度中值,然後採用加權非線gamma灰度矯演算法來歸一化待識別圖像的照變化,使之與已知的標準庫中的圖像灰度一致。
  12. When the isotropic waveguide is under the isotropic disturbances, the coupling term due to polarization, which is presented in the coupled - mode theory of the wei - ping huang, is n ' t included in this rigorous vectorial coupled - mode theory, exactly, the rigorous vectorial cmt does n ' t contain the coupling term due to polarization which is include in the scalar coupled - mode theory because this term is counteracted with the other coupling term neglected under weakly guiding approximation. as for anisotropic disturbances, we get the coupled - mode equations with arbitrary dielectric tensors. from them, we obtain the coupled - mode equations of the slowly varying term c ( z ) which is more simplicity

    當受到各微擾時,我們發現嚴格的矢量理論所得到的耦合系數表達式中並不包括wei - pinghuang的理論中的偏振耦合項,更確切的說,偏振耦合項好與因弱導近似而忽略的項相抵消,這就是標量理論所得到結果(有偏振耦合項)與矢量理論在標量近似下的結果(不含偏振耦合項)不一致的原因所在;當各微擾時,我們得到了包含微擾介電張量各個分量的橫電磁場耦合波方程,討論了微擾介電張量各個分量對耦合的影響,而且從橫電磁場耦合波方程出發得到了形式更加簡單的只含有橫電場系數的緩變分量c _ ( z )的耦合波方程和耦合系數表達式,並以弱導近似下的單模纖兩交偏振模耦合為例對耦合系數在不同條件下的取捨做了定的分析。
  13. Biology, etc. owing to many merits has not yet been used to measure parameters of gratings. the paper researches on the subject in view of current lack of it. the main tasks of the paper include : analyzing ellipsometric characteristics of gratings in detail with vector diffraction theory and ellipsometrics ; devising a reflective quarter wave plate at normal incidence according to some ellipsometric characteristics ; making use of normal simplex algorithm during ellipsometric inversion of gratings parameters, inversing ellipsometric parameters with gaussian noise of different standard deviations to simulate actually measured values with examples of isotropic metallic and anisotropic step gratings and testing that ellipsometry about gratings parameters is feasible with the range of certain precision ; discussing choice of incidence angle at length

    本論文的主要工作包括:結合柵的矢量衍射理論和薄膜的橢偏理論,詳細分析了柵的橢偏特;並且根據一些橢偏特設計出一款入射反射型單波長1 4波片;在柵參數的橢偏反演中,引入單純形法作為反演演算法,分別以各弦形金屬柵和各的階梯型柵為例,在標準橢偏值的基礎上加入不同偏差的高斯噪聲來模擬實際的橢偏測量值進行反演,在一定精度范圍內得出滿意的柵參數,說明柵參數的橢偏測量是可行的;還就入射角的選取問題進行了一定的探討。
  14. In order to better detect the image edge information, firstly, non ? linear median filter technology of characteristic direction was applied to filter out the gauss noise ; secondly, ( 3, 1 ) biorthogonal spline wavelet was used as the primitive wavelet filter, adopting lifting scheme to build the most superior biorthogonal wavelet filter, and applying the superior biorthogonal wavelet to the multiresolution wavelet edge detection ; at the same time, floating threshold was defined and applied to the image edge detection, and the image edge position was located accurately

    在激探測系統中,微弱的回波圖像淹沒在強背景噪聲中,為更好地檢測這類含噪圖像的邊緣信息,首先應用特徵方非線中值濾波技術,濾去高斯噪聲;其次,選擇( 3 , 1 )雙交樣條小波作為原始小波濾波器,採用提升方案構造最優雙交小波濾波器,應用構造的雙交小波進行多尺度小波邊緣檢測;同時,通過定義浮動閾值,並應用於圖像邊緣檢測,較準確地定位了邊緣位置。
  15. So, it is looked forward to being more perfect. in this thesis, beginning with the maxwell equation, we mainly do the following work based on the rigorous mathematical analysis : firstly, we present the rigorous nonorthogonal vectorial cmt for the isotropic waveguide under isotropic disturbances and anisotropic disturbances respectively. during the derivation, it is fully reflected the property of the vector and the universal fitness without any approximation

    本論文從maxwell方程出發,在嚴格的數學分析基礎上主要做了以下兩方面的工作:第一,分別嚴格地推導出了各波導在各微擾和各微擾下的非交矢量耦合模理論,在推導過程中,考慮到電磁場的矢量和非且沒有用到任何近似,因此具有普遍適用
  16. Fine, said pierre, looking at dolohov, who with the bottle in his hand had gone up to the window, from which the light of the sky could be seen and the glow of morning and of evening melting into it

    皮埃爾望著多洛霍夫說道,多洛霍夫拿了一瓶烈甜酒,窗前走去,從窗子望得見天空的亮,曙和夕暉在天上連成一片了。
  17. Leaves are always positively phototropic.

    葉子總是正向光性的。
  18. The long period fiber gratings ( lpfg ) have been chosen to be the filters finally after comparing several filters. the specific loss could be achieved by the coupling between two co - propagating modes in lpfg

    Lpfg利用纖內同傳輸模式之間的耦合,把傳輸的基模能量有選擇的耦合到其它傳輸的模式中,實現選擇損耗。
  19. Due to characteristics of white led such as large forward voltage and high temperature sensitivity, and necessity of uniform brightness requirement of the portable application, specially designed power management ic is needed

    由於便攜式應用對白led亮度均勻的要求,以及白led自身的導通電壓大、電學參數離散大、容易受溫度影響等特點,需要設計專門的電源管理晶元來驅動白led 。
  20. If a optical anisotropic medium wafer is put into the mid of a polarizer and a analyser, the spectral transmission of the optical system can calculated. the transmission is determine by the birefringence and the thickness of the medium

    對各介質處于透軸相互交的兩個偏振片之間構成的路,其譜透過率與介質的延遲量有關,即與介質的雙折射特和厚度有關。
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