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parabola

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parabola n.1.【數學】拋物線。2.碗狀物〔如話筒等〕。

n. 1.【數學】拋物線。 2.碗狀物〔如話筒等〕。 “a parabola as envelope“ 中文翻譯：   作為包絡的拋物線“arch parabola“ 中文翻譯：   拱拋物線“axis of a parabola“ 中文翻譯：   拋物線的軸“axis of parabola“ 中文翻譯：   拋物線的軸“cubic parabola“ 中文翻譯：   二次拋物線; 立方拋物線; 三次拋物線“cubical parabola“ 中文翻譯：   拋物撓線; 三次拋物線“degenerate parabola“ 中文翻譯：   退化拋物線“depth of parabola“ 中文翻譯：   拋物線深度“divergent parabola“ 中文翻譯：   發散拋物動; 發散拋物線; 完全溢流“equivalent parabola“ 中文翻譯：   等效拋物面“fitting of a parabola“ 中文翻譯：   拋物線擬合“focal parabola“ 中文翻譯：   焦拋物線“focus of a parabola“ 中文翻譯：   拋物線的焦點“fortrat parabola“ 中文翻譯：   福特雷脫拋物線“frustum of parabola“ 中文翻譯：   拋物線截角錐體“horizontal parabola“ 中文翻譯：   水平拋物波“hyperbolic parabola“ 中文翻譯：   雙曲拋物線“lift parabola“ 中文翻譯：   升力拋物線“offset parabola“ 中文翻譯：   偏置拋物面“osculating parabola“ 中文翻譯：   密切拋物線“parabola control“ 中文翻譯：   拋物線電壓調節器“parabola cupola“ 中文翻譯：   生代“parabola dome“ 中文翻譯：   生代“parabola equation“ 中文翻譯：   拋物線方程“paraboea velutina“ 中文翻譯：   密葉蛛毛苣苔“parabola control potentiometer“ 中文翻譯：   拋物線控制電位器

3 ) some low graphitization degree samples “ magnetoresistance is 0 when measure temperature is enough high . 3 ) in low intensity of magnetic field , the curve of / 0 - b is parabola 建議對碳/碳復合材料磁電阻的測量參數是：溫度區間為70 100k ；磁場強度選擇區間為1 1 . 2t 。

3 ) some low graphitization degree samples “ magnetoresistance is 0 when measure temperature is enough high . 3 ) in low intensity of magnetic field , the curve of / 0 - b is parabola 建議對碳/碳復合材料磁電阻的測量參數是：溫度區間為70 100k ；磁場強度選擇區間為1 1 . 2t 。

3 ) some low graphitization degree samples “ magnetoresistance is 0 when measure temperature is enough high . 3 ) in low intensity of magnetic field , the curve of / 0 - b is parabola 建議對碳/碳復合材料磁電阻的測量參數是：溫度區間為70 100k ；磁場強度選擇區間為1 1 . 2t 。

parabolic

Three shaped profiles ( parabola , linear , and exponential ) have been considered . the exponential dispersion profile fiber loop is optimal for the propagation and compression of picosecond pulse . on the contrary , the parabola dispersion profile fiber loop is optimal for femtosecond pulse due to the high order effects such as the third order dispersion ( tod ) , stimulated raman scattering ( srs ) and self steeping ( ss ) ( 3 )研究不同色散遞減類型(拋物線遞減、線性遞減、指數遞減)光纖構成的環形腔中傳輸的特性，發現其色散曲線為指數遞減型光纖有利于皮秒光脈沖的傳輸與壓縮；而對于飛秒脈沖，由于三階色散( tod ) 、脈沖拉曼自散射( srs )及自變陡( ss )等高階非線性效應的影響，情況恰恰相反；色散曲線為拋物線遞減型的光纖構成的光纖環最有利于脈沖傳輸與壓縮。

The starch accumulating quantity of all the tested cultivars showed irregular parabola types in difference soils ; the strong gluten cultivar did not reach a notable level in different soils , both middle gluten cultivar and weak gluten cultivar gave the largest in the loam soil based on the starch accumulating quantity 不同土壤質地強筋品種淀粉積累呈不規則拋物線趨勢，但差異不大；中筋品種在不同土壤質地上積累動態呈不規則拋物線，其中，在壤土上淀粉積累量最大；弱筋品種在不同土壤上淀粉積累均呈拋物線型，在壤土上淀粉積累量最大。

The theoretical deduction in chapter 3 shows that the shape of load distribution used in the arithmetic is a decisive fact of the error margin size , the more the adoptive shape looks like the actual case , the smaller the error margin will be , therefore the tilt parabola shape can instead of the actual shape of load distribution in the permissible error margin when we predicting constant loading noise caused by the tail rotor of helicopter 在第三章中通過理論推導和計算比較發現,在預測直升機尾槳定常載荷噪聲時,其誤差大小取決于算法中槳葉弦向載荷分布的數學描述與實際弦向載荷分布的吻合程度,而選取一種與實際弦向載荷分布較為相似的斜拋物線形來預測噪聲所導致的誤差是很小的。

This paper describes the conjunction relationship of the basic point of the flat surface outline on the parts and reveals the internal law of the intersections connecting with the typical curve ; the principle of the calculation and the characteristics on straight line to parabola basic points are illustrated 摘要介紹了平面輪廓零件各組成元素之間的連接關系，并揭示了典型曲線交接的內在規律，闡述了直線與拋物線交接點的計算原理和特點，總結歸納直線與拋物線連接的處理方法，以及自動淘汰無效基點的基本準則。

Aimmed to retard the response of ballistic missile defence system , the wavy trajectory with three crests is designed in this thesis to replace traditional parabola one . this kind of trajectory make anti - defence system have lots of difficulties to detect and compute the track and destination of ballistic missiles before reentry . so , applying the wavy trajectory can greatly improve the anti - defence ability of ballistic missiles 從延緩導彈防御系統的早期預警時間著手，將傳統彈道導彈的拋物線彈道中段設計成有多個波峰的跳躍式彈道，使得探測系統在導彈再入大氣層之前，很難準確探測和計算導彈的落點，使得防御系統防不勝防，從而大大地提高了彈道導彈的突防能力。

The distance from figure center of the parabola to the potential slide surface is less than half of the section length . mechanical conditions of this method include not only force equilibrium but also moment equilibrium . as for the beam - on - foundation , its pressure can be calculated by homogeneous hypothesis or winkler foundation hypothesis or infinite half elastic foundation hypothesis on the pulling anchor - cable step and by coulomb active earth pressure theory approximatively on the long term working step 對于樁在滑面以上段所受的坡體荷載，提出可按形心偏下的拋物線型分布模式計算，并在滿足力的平衡條件的同時還滿足力矩平衡條件；對于地梁上作用的坡體荷載，提出在錨索張拉階段可按均布或溫克爾( winkler )地基假定或彈性半無限體地基假定來計算，在工作階段則一般可以近似按庫侖主動土壓力理論計算。

Through the flume experimental research , the velocity distribution formulas for rectangular open channel have been found , including parabola form of velocity distribution on the vertical and power form of mean velocity distribution on the transverse direction ; meanwhile , the means of ascertaining correlative coefficient have been given in this paper 摘要通過對明渠流速的水槽試驗研究，建立了矩形斷面明渠沿垂線流速的拋物線分布公式和橫向平均流速的乘冪函數分布公式，同時給出了相關系數的確定方法。

On the basic of the detailed analysis on main causes and main prediction methods of casting shrinkage / porosity , we put forward two methods to describe the solid phase rate of materials solidification . one is liner - distributing method , and the other is parabola - distributing method . and then , we apply the former to the system 本文在充分分析鑄件縮孔縮松產生機理與主要預測方法的基礎上，提出了材料凝固固相率的線性分布法和拋物線分布法，并將前者應用于系統中；同時提出了溫度梯度法和新山判據法的實現算法，此算法具有一定的靈活性。

Layout input pole length ' s locus when the mechanism follows kadang movement in two ways . one is multinomial curve locus and the other is linearity intermixed by parabola curve locus . we study the displacement > velocity and acceleration curve consulting time under variety velocity characters , and get the best curve and the best velocity character , which will have a very important significance for kadang movement ' s input control of this mechanism 對卡當運動輸入桿件的伸長進行了軌跡規劃，采用了多項式與混有拋物線的線性函數作為規劃軌跡，研究了不同速度參數條件下的位移、速度、加速度的時間變化曲線，給出了最優曲線和最優速度，這對于機構卡當運動輸入控制的實現和優化具有重要意義。

On the contrary , his eyes wet with tears , pierre looked joyously at this bright comet , which seemed as though after flying with inconceivable swiftness through infinite space in a parabola , it had suddenly , like an arrow piercing the earth , stuck fast at one chosen spot in the black sky , and stayed there , vigorously tossing up its tail , shining and playing with its white light among the countless other twinkling stars 與之相反，皮埃爾興高采烈地睜開他那雙被淚水沾濕的眼睛，凝視著這顆明亮的彗星，它仿佛正以非言語所能形容的速度沿著一條拋物線飛過這遼闊的空間，忽然它像一枝射進土中的利箭，在黑暗的天空楔入它所選定的地方，停止不動，它使盡全力地翹起尾巴，在無數閃爍的星星之間炫耀自己的白光。

After the comparing the simulation results with the theoretic results under the three followed condition : a point light source on the parabola reflector focus , a point light on the ellipsoid reflector focus and a point light source before the parabola reflector focus , a conclusion is gotten that the two results are generally accordant , the accuracy of the simulation software reach the engineering requirements and the computational simulation software of photometric characteristics of headlamp of motor vehicles can guide the design of the headlamp reflectors 比較了點光源位于拋物面反射器和橢球面反射器焦點的情況和點光源偏離拋物面焦點的情況下照度的理論計算結果和采用本文的照度仿真計算結果，其仿真計算結果和理論計算結果基本相符，能滿足工程上的要求，說明仿真計算軟件對前照燈的反射鏡的設計具有很好的指導意義。

There are some creations in this paper . first , the relationship among the physical property , crystal structure , preparation method and doping content is established to be a parabola equation . the extreme value of this equation determines the optimum doping content 本論文工作的創新點在于：從半導體發光材料的晶體結構出發，建立起材料的物理性能、晶體結構中原子配位數、最佳摻雜含量和制備方法之間的關系，歸納出材料摻雜的最佳摻雜含量的理論表達式。

In this paper , two kinds of the aforesaid methods based on the parabola and catenary theories for the datum strand erection of the self - anchored suspension bridge of pingsheng bridge in foshan under non - datum state condition of erection are presented 介紹基于拋物線理論和基于懸鏈線理論的平勝大橋基準索股非基準狀態下架設垂度修正量的確定方法及達到該垂度的施工控制方法。

The parabola traces of shot based on goal angles corresponding to different velocity area are outlined schematically , and the relationship between hollow - shot probability and the shot distance , the height of the shot point are decussed 根據中框投籃角分析了不同投籃速度區間對應的投籃弧線，還對空心中框率和投籃距離及投籃點高度間的關系作了討論。

The association between farmer ' s income and ages of householder with different education attainments can be assumed as parabola . as learning by doing for householder , the growth rate of income is higher for householder wi 首先，采用romer （ 990 ）內生經濟增長模型分析農村人力資本對農村經濟增長的作用，農村人力資本對農業增加值增長的貢獻率為6

The pyrolysis mechan ism functions of the second stage of dvb / hpso and vpso / hpso are both parabola principle , and the rates of pyrolysis reactions in this stage are both controlled by one - dimensional diffusion 600時， ai可與先驅體裂解產生的含碳小分子氣體反應生成a14c3 ， 800時ai可與裂解氣氛nz反應生成ain ，溫度升高， al的氮化反應不斷進行。