粒子對產生 的英文怎麼說

中文拼音 [lìziduìchǎnshēng]
粒子對產生 英文
pair production
  • 粒 : Ⅰ名 （小圓珠形或小碎塊形物） small particles; grain; granule; pellet Ⅱ量詞（用於粒狀物）
  • 子 : 子Ⅰ名詞1 （兒子） son 2 （人的通稱） person 3 （古代特指有學問的男人） ancient title of respect f...
  • 對 : Ⅰ動詞1 （回答） answer; reply 2 （對待; 對付） treat; cope with; counter 3 （朝; 向; 面對） be tr...
  • 產 : Ⅰ動詞1 （人或動物的幼體從母體中分離出來） give birth to; be delivered of; breed 2 （創造財富; 生...
  • 生 : Ⅰ動詞1 （生育; 生殖） give birth to; bear 2 （出生） be born 3 （生長） grow 4 （生存; 活） live;...
  • 粒子 : grain; granule
  1. According to the theory, matter can only be created in particle - antiparticle pairs

    依照理論，物質只能在粒子-反粒子對中產生。
  2. By random chance, a particle - antiparticle pair can flit into existence straddling the event horizon

    跨越事件視界時，一對粒子-反粒子對能夠以某種隨機性產生。
  3. The research status of the world diesel exhaust aftertreatment technology is summarized systemicallyo at the same time, the development status and problems about oxygenation catalysis converter and particulate filter are analyzed on the basis of mentioned informations, we bring up a diesel exhaust cleanse system, that adopts the technique course of catalysis conversion combining particulate collection and regeneration the system collects exhaust particulate by means of efficacious filtering material it can oxidize ho co and macromolecule solvable organic via catalyst and diesel oil additive enhanced temperature will partly oxidize collected particulate and ultimately achieve the aim of exhaust reduction, after processing system frame design and trial matching, it ' s detected that the system can surely cleanse gas exhaust and particulate in addition, gas - ejected combustion - supporting regeneration for diesel particulate filter is also researched, we have rudimentarily designed the software and hardware of the g as - ejected combustion - supporting system having processed a series of trials, we discover the rules of the system credibly working these rules demonstrate the right direction for researching gas - ejected combustion - supporting regeneration technology

    本文系統地介紹了國內外柴油機排氣后處理技術的研究現狀，分析了氧化催化轉化器和微粒捕集器的發展現狀及存在的問題，以此為基礎，提出了一種柴油機排氣凈化系統，該系統採用催化轉化與微粒捕集及再生相結合的技術路線，通過過濾材料的有效過濾，將排氣中的微粒進行收集，藉助于催化劑和柴油添加劑使排氣中hc 、 co及高分子可溶性有機物氧化，產生的高溫使得收集到的微粒部分氧化，從而達到降低排放的效果。通過系統結構設計和試驗匹配，實現了對氣體排放物和微粒的凈化。同時，論文中還進行了柴油機微粒捕集器噴氣助燃再生的研究，初步設計了噴氣助燃系統，進行了控制系統軟、硬體的開發，通過正交試驗，摸索出了噴氣助燃系統可靠工作的一般規律，為噴氣助燃再生技術的開發提供了方向。
  4. Radiation spectrums of relativistic charged particles in a dipolar magnetic field were studied numerically in detail by using the current density of moving charged particles in this paper

    摘要從運動的荷電粒子產生的流密度出發，研究了在地球偶極磁場中運動的相對論性荷電粒子的輻射能量譜，並對其進行數值計算。
  5. The mechanism of the downburst formation was also investigated based on the cloud microphysics of the simulated storm and it was found that this downburst was primarily produced by hail loading, and enhanced by hail melting and rain evaporation. and the loading and the melting of hail played a very important role in producing the downburst. the gale at the surface was caused by the severe downburst

    從雲微物理學角度分析了此次局地性大風的形成原因，認為由高空冰雹粒子的拖曳產生的負浮力作用是促發強下沉氣流產生的主要原因，其次是冰雹的融化和雨水蒸發冷卻對下沉氣流起加速作用，冰雹的拖曳和融化作用對下沉氣流具有決定性的作用。
  6. " for their fundamental work in quantum electrodynamics, with deep - ploughing consequences for the physics of elementary particles

    在量子電動力學方面取得對粒子物理學產生深遠影響的研究成果
  7. The electronic temperature, intensities of all lines and continuous spectra gradually increased with the increment of laser energy, and they got to maximum at different laser energy. our results of copper and aluminum show that there are possibly different thresholds of laser energy to electronic temperature and intensities of emission spectra of laser ablated plasma. at the different environmental gas pressure, spatial emission intensity distribution is explained by the competition among " heat reservoir effect ", " confined effect " and " s hadow effect "

    認為cu等離子體羽的發光機制是由電子與粒子的碰撞傳能、電子與離子的復合形成的；隨激光能量的增加， cu等離子體特徵輻射（分立譜） 、連續背景輻射（連續譜） 、電子溫度都出現最大值；結合對al的實驗結果說明：激光燒蝕金屬產生的等離子體，其特徵輻射、連續輻射、電子溫度可能都存在一定的能量閾值；背景氣壓對激光燒蝕等離子體譜線的影響，其機理可以認為是「熱庫效應」 、 「約束效應」及「陰影效應」相互競爭的綜合結果。
  8. Both of these particles can produce ion pairs.

    這兩種粒子都能產生離子對。
  9. As being superfluid, particle current in bec is irrotational and this makes that its respondence to rotation is different from rotating as a whole for usual fluid and is to form a vortex or vortex lattice

    作為超流體， bec中的粒子流是無旋的，這使得它對旋轉的響應異于普通流體的整體轉動而產生渦旋或渦旋晶格。
  10. Thus, this research could not say much about the effects of interplanetary charged particles, which cannot penetrate earth ' s magnetosphere

    因此，對遊走於行星之間，但是無法穿透地球磁層的帶電粒子所產生的效應，這項研究所透露的訊息不多。
  11. The irradiation experimental results show that the resolution of thin detector e1 is higher than that of other thick detectors for ex - particles and protons detection. energy calibration for a - particles was completed with multiplication factor 1 / 3. energy calibrations of a - particles in detector e1 and e1, are 0. 107 mev and 0. 123 mev per channel, respectively

    質子能量刻度採用1檔，每道能量h約在0 . 0167mev道，但是在e _ 1探測器中的能量刻度隨著能量的增加略有所下降，這是由於高能質子伴隨有較多的核反應道對粒子探測產生了干擾，從而增加了在e _ 1探測器中的能量沉積道數，使得每道能量略有所下降，另一個因素可能是探測器厚度的不均勻性的影響，但這並不影響對粒子的鑒別。
  12. A pulse from an intense laser or particle beam, however, creates a disturbance in the plasma

    然而，一個從高密度的雷射或粒子束所產生的脈沖，可以對電漿產生擾動。
  13. With the wide application of carbon / phenolic composite in spacecrafts and missile hulls, the prediction of dynamic response or internal damage of structures subject to explosion, impact or the shock wave induced from the sediment of high - energy particle beam and the evaluation of capability of composite in defending stress wave, aroused the study of the constitutive relation and the characteristic of stress wave propagating

    隨著碳酚醛在航天飛行器結構及導彈殼體中日益廣泛的應用，預測結構受到爆炸作用、沖擊或由於高能粒子束在其表層大量沉積而產生的應力波所引起的動態響應及內部損傷，以及對其防護應力波的性能進行評估等，都需要對碳酚醛的本構關系以及應力波在其中的傳播特性開展研究。
  14. The basic principle, main properties, typical parameters, technical characteristics and general situation of klystron are introduced. the electron beam prebunching in the modulated cavity and shift tube of relativistic klystron amplifer ( rka ) is studied analytically, a self - consistent equation of radiation generated by the prebunched electron beam in the radiation cavity is derived using the field method of particle ? wave interaction instead of the electrical circuit method, and in terms of it, the gain in the linear regime calculated, a field analysis method is proposed. the theory analysis shows that the characteristic parameters, such as resonance frequency, real part of gap - impedance, external quality fadtor in all kinds of klystron output circuits including single - beam, multi - beam, single - gap, multi - gap, single - beammulti - gap, multi - beam multi - gap klystron output circuit, can be calculated by the field analysis method

    本文系統的介紹了速調管的工作原理、主要特點、發展概況、主要性能指標和技術特點，解析的研究了電子束在相對論速調管放大器的調制腔和漂移管中的預群聚;用粒子波互作用的場方法導出了在輻射腔中預群聚電子束產生輻射的自洽方程，同時對線性區的增益進行了計算。理論分析表明，場分析法可用於計算單注單間隙、多注多間隙、單注多間隙和多注多間隙速調管輸出迴路的諧振頻率、間隙阻抗實部和外觀品質因數等特性參數。
  15. Slowed, pulling away from the invisible dark matter particles. the researchers said they could detect the dark matter particles by their gravitational pull on the surrounding visible particles

    當氣雲相撞時，可見氣體粒子運動速度減慢，這正說明圍繞在周圍的不可見粒子對它們產生了引力作用。
  16. In chapter 3, we studied the effect of gaussian transverse profile for the driving and laser fields on lasing without population inversion ( lwi ) in a closed v - type system and an open v - type system. moreover, we discussed also the effect of the unsaturated gain coefficient, the cavity - damping rate, the ratio of the atomic injection rates and atomic exit rate on the corresponding systems. in chapter 4, we mainly discussed the effect of doppler broadening on the gain, dispersion and the frequency up - conversion of the open v - type lwi system and compared the differences and the same between the open system and the corresponding closed system

    發現： （ 1 ）在考慮doppler展寬的情況下，通過選取合適的實驗室條件（比如合適的原子環境溫度等）可得到合適doppler展寬值，從而使系統獲得最佳增益； （ 2 ）要想實現系統的頻率上轉換，同時又要獲得足夠強的無反轉激光增益，則系統頻率轉換比不能選取的太大； （ 3 ）對于開放系統，比較小的粒子注入速率比與退出速率對產生無反轉激光是有利碩士學位論文摘要的： （ 4 ）由於dopp1oy展寬的存在，當探測場與驅動場的傳播方向相反時，增益在探測場失諧的某一段區域產生振蕩，且振蕩的振幅、頻率失諧范圍的大小與dopper展寬的取值有關。
  17. The charged particles irradiation will cause a serious effects on the materials, electronic devices and other accessories of aircraft, such as single event upset ( seu ), single event latch - up ( sel ), single event burn - up ( seb ) and total doses effects

    後者主要包括電子（ e _ e 5mev ） 、質子（ e _ p 500mev ）和重帶電粒子（通常指~ （ 56 ） fe以下的重離子） 。這些粒子對飛行器的材料、電子器件、設備以及飛行人員安全等方面產生影響，尤其是單粒子效應所引起的故障尤為突出。
  18. As to the simulation of the whole process of the generation and transportation of vapor phase film atoms, few attempts were made

    在薄膜技術中，計算機模擬已被用來研究薄膜的生長過程，但對成膜粒子的產生和輸運過程還很少進行綜合考慮和模擬。
  19. The main purpose of this article - is to simulate the whole process of the generation and transportation of the vapor phase particles of the film in rf magnetron sputtering, which contains transportation of ions in rf glow discharge, sputtering of target and transportation of sputtered atoms, via models that are established on the basis of the physics of sheath theory for the rf magnetron glow discharge, sputtering theory and transportation theory

    本論文對射頻磁控濺射中入射離子的產生和輸運、離子對靶材的濺射、濺射原子的輸運過程進行了綜合考慮，根據射頻輝光放電的陰極殼層理論、粒子的輸運理論、離子對靶材的濺射理論建立模型，進行了計算機模擬。
  20. Yet the detection was performed in the atmosphere, and it was an extremely complicated medium composed of many kinds of components, when laser beam penetrates such medium, severe scattering and absorbing will be exerted on the proper beam by the atmosphere molecules or aerosol etc. further more, different extents of absorbing will be exerted on the different laser beam by different qualitative particles

    但由於目標探測是在大氣中進行的，而大氣是一個極為復雜的介質，激光通過大氣時，空氣分子以及大氣中的氣溶膠粒子就會對激光產生嚴重的散射和吸收。而且不同性質的粒子對不同波長的激光會產生不同程度的吸收。
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