首次碰撞 的英文怎麼說

中文拼音 [shǒucìpèngzhuàng]
首次碰撞 英文
initial collision
  • 首 : Ⅰ名詞1 （頭） head 2 （首領） leader; head; chief 3 （表示方位） aspect 4 （姓氏） a surname Ⅱ動...
  • 次 : Ⅰ名詞1 （次序; 等第） order; sequence 2 [書面語] （出外遠行時停留的處所） stopping place on a jou...
  • 碰 : 動詞1 （一物體突然接觸另一物體; 撞擊） touch; bump 2 （碰見; 遇到） meet; run into 3 （試探 ） tr...
  • 撞 : 動詞1 （猛然碰上） collide; strike; knock; bump against; run into 2 （碰見） bump into; run into;...
  • 首次 : for the first time; first
  • 碰撞 : 1 （猛然碰上） collide; run into; knock against; run foul of; crash 2 [物理學] collision; impact;...
  1. With the development of automobile industry and road transportation ， the traffic accidents happen every day in the world and become a serious society problem the vehicle collision accidents are over 2 / 3 times as much as all traffic accidents they cause a large amount of social infuence and serious economic loss therefore ， it is urgent to study vehicle collision accidents comprehensively and systematically ， and the research also is the academic foundation to analyze and deal with traffic accident it is difficult to authenticate car velocity after traffic accident to dig over locate witness is right way mechanics is avaid tool in this field it is important to establish math model and this is precondition to calculate vehicle velocity firstly on the basis of summarizing the research results ， this paper deeply discusses the calculating model to analyze the instantaneous motion state in the vehicle collision, the interrelation among the every moving mechanics parameters in the every phase of the collision secondly ， according to the collinear collision and two - dimension collision and the restitution coefficient ， the paper estabishesthe post collision movement models it proves that these models are correct and valid thirdly ， this paper try to research reconstruction of road traffic accident and put forward the method on it

    對交通事故的科學分析應是建立在正確的數學模型與計算機模擬技術基礎上的定量分析，其基本條件就是要有能正確描述事故過程中汽車狀態的數學模型，只有建立正確的數學模型，才能較準確地推定事故車輛的碰撞速度。所以建立正確地車輛碰撞模型和運動模型正是汽車事故再現的關鍵問題。本文首先在總結前人研究的基礎上，深入地研究汽車碰撞理論，分析了車對車碰撞作用瞬間狀態的計算模型及碰撞恢復系數與碰撞前、后速度的關系；其次，根據交通事故中最普遍的一維和二維碰撞的不同情況，採用恢復系數和滑動摩擦系數等概念，分別建立了碰撞后車輛動力學模型；第三，對汽車碰撞事故再現進行了初步研究，確定了車對車碰撞事故模擬計算和反推計算方法，並給出相應的模擬程序流程圖。
  2. 4. achieved the high - speed colliding experiment of landslide for the first time, the paper studies the volume distributing ruler of different velocity segment after collide, fits the experiment data via extreme function, obtains the value range of the shape parameter, thereby gets the distributing function of all part of landslide after collide. on the base of above, the paper studies the accelerating effect of partial rock - mass because of colliding, and acquires the relation between accelerating volume and overall volume, and colliding velocity

    （ 4 ）首次進行了滑坡巖體的高速碰撞模型實驗，研究了碰撞解體后不同速度段巖體體積的分佈規律，並應用峰值extreme函數對實驗結果進行了數據擬合，確定出了各形狀參數的取值范圍，從而得到了滑坡巖體高速碰撞后不同塊體的分佈函數，並在此基礎上研究了滑坡巖體碰撞後部分巖體的加速運西南交通大學博士研究生學位論文第2頁動效應，得出了獲得加速的巖體比例與滑坡總體積及碰撞速度的關系。
  3. For two up and down plunging jets, an optimization model is introduced according to maximum energy dissipation. in this model, the exit angle of jet is first considered actually. the optimal computation of the energy dissipation between two impinging jets in xiao - wan project demonstrates that this model is reasonable too ; 6

    對于上、下雙股挑流水舌，以碰撞消能率為優化目標，首次考慮了出口水舌的坦化影響因素，建立了優化數學模型，並通過對小灣拱壩壩身表、中孔水舌的碰撞計算，認為所提出的數學優化模型是可用的； 6
  4. Applying strain - energy distributing theory during col1iding and energy ruler during colliding, the paper put forwards the critical velocity equation which rock - mass destroy when colliding occuf, and other severa1 equations to make certain average velocity and motion direction after collide. at the same time, the equation to make certain the value of energy to make rock - mass destroy has been deducted, and on the base of this, the paper brings forward the equation to calculate average diameter after rock - mass falls into pieces by the way of word - cost theory. accordingly, the paper perfectly studies the effect of falling into pieces in the course of landslide colliding

    （ 3 ）首次應用碰撞過程應變能「分配」原理及巖體破壞的能量條件，導出了滑坡巖體在碰撞時發生破壞的臨界速度公式及碰撞后滑坡巖體的平均速度和運動方向的確定公式，導出了碰撞過程用於巖體破碎的能量計算公式，並在此基礎上，利用功耗原理，提出了滑坡巖體破碎后平均塊度的計算關系式，從而較完整地分析了滑坡巖體碰撞的解體破碎效應。
  5. We presented the theoretical model of collisional quantum interference on rotational energy transfer in atom - diatom system, using the theories of time dependent born approximation and quantum inelastic scattering, and taking into account the long - range interaction potentials. the key factors in the determination of the differential and integral interference angles are obtained. co a1 ( v = 0 ) ~ e3 - ( v = l ) system in collision with he is calculated, the calculated values are consistent with the experimental results, but for the partners being ne and ar, the calculated values are not so good

    首次得到了從理論中計算干涉相位角的方法，得出了干涉相位角和實驗條件中各相關量的關系，並計算了coa ~ 1 （ v = 0 ） e ~ 3 ~ - （ v = 1 ）和he碰撞誘導轉動能量傳遞過程中量子干涉效應的實驗，計算結果和實驗符合的很好，但是對于碰撞伴是ne和ar的實驗，計算結果不是很好，原因是隨著碰撞伴質量和極化率的增大，相互作用勢更強，應該考慮短程相互作用勢的貢獻。
  6. There is only such report on the idi diesel engine by foreign countries according to my materials. 4. firstly finished the improved curl model and combined with the turbulent model to set up a spray and combustive stochastic model of di diesel engine, using monte carlo method to simulate it

    針對直噴式柴油機的特點，在國內首次完成了利用改進的curl碰撞?離散模型，並結合湍流模型建立了直噴式柴油機噴霧和燃燒的隨機模型，並利用montecarlo法進行數值求解。
  7. Instead of beginning slowly with some safe - but - dull low - energy collisions, the machine ' s first run will accelerate its particles to high energies straight away

    不再採用低速安全起步但笨拙又低能量的碰撞，而會讓機器首次運行時就把粒子直接加速到高能量層。
  8. In addition, based on the expert system theory, and the ship intelligent collision avoidance expert system, the frame of multi - ship collision avoidance expert simulation system is built. finally, at the foundation visual basic 6. 0 combined with matlab 6. 0, a software of multi - ship collision avoidance expert simulation system is designed. it should be noted that this software can give out the project, the opportune moment, the extent of veer and the reversion of course, complete the auto - simulation of multi - ship collision avoidance

    在系統的研究過程中，首先對船舶避碰領域知識進行分析；然後用層次分析法實現了多船會遇避碰決策，並且在碰撞危險度的基礎上實現了行動時機、避碰方案與轉向幅度的計算；接著根據專家系統理論，在船舶智能避碰專家系統的基礎上構建了多船會遇的避碰專家系統的框架；最後，以visualbasic6 . 0作為軟體開發平臺，並結合matlab6 . 0軟體，設計了一種具有良好可視化人機界面的多船會遇避碰模擬專家系統軟體。
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