電子對產生 的英文怎麼說

中文拼音 [diànziduìchǎnshēng]
電子對產生 英文
pair production
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 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;...
  • 電子 : [物理學] [電學] electron
  1. The second section described the accounting issues brought by cyber economy environment including the impact to the accounting suppose, accounting target, the content, the means, the process of accounting checking and the impact to the accounting information system. the third section described the ideas of the innovation of cyber economy environment emphases on the accounting business process reengineering, accounting information system innovation, assets affirmance, accounting settlement under the cyber economy environment. on basis of the third section, the fourth section analyzed the cyber accounting ' s origins, developme nt, characteristic and problems occurred in the development of the cyber accounting

    本文共分四章，第一章論述了網路經濟環境下會計環境的變遷，分析了網路經濟的產生與特點，概述了電子商務及虛擬企業的特徵，並指出對企業的組織、生產、管理環境帶來的巨大變化；第二章闡述了網路經濟環境引發的會計問題，包括對會計假設、會計目標、會計核算內容、方法、流程及會計信息系統的影響；第三章提出了對網路經濟環境下的會計創新的設想，重點論述了網路經濟環境下的會計業務流程重組與會計信息系統的變革，網路經濟環境下的資產與會計確認，以及會計結算等方面的創新設想；在第三章討論內容的基礎上，第四章具體分析了網路會計的產生、發展及特點，並分析了網路會計發展過程中存在的主要問題，針對這些問題，提出了相應的對策。
  2. Using cd, cu, zn and cr as experimental toxicants and crucian as experimental creature, we employed the environmental biotechniques ( flame atomic absorption spectrophotometry, the method of improved pyrogallol autoxidation and electron microscopy ) to study the acute toxicity and secure concentrations of heavy metals to crucian ; the accumulation and distribution of mixed heavy metals to fingling crucian ; the activities of superoxide dismutase ( sod ) of gill and liver tissues and the hispathological and ultrastructural change of superfine structure of liver and kidney of crucian after cadmium exposure. through which, we intended to fully and systemically study the toxic influence of heavy metals to fish, and preliminarily discuss the influence of heavy metals pollution to the diversified level of fish such as individual, organ, tissue, cell and molecule. thus we tried to provide scientific evidence to establish preventative management measures, avoid and relieve the harm of heavy metals pollution to aquicolous ecosystem in time

    隨后以這幾種重金屬作為實驗毒物，以鯽魚為實驗動物，應用環境生物技術、火焰原子吸收分光光度法、鄰苯三酚自氧化法、透射電鏡等技術研究了重金屬cu 、 zn 、 cd和cr對鯽魚的急性毒性及其安全濃度評價、混合重金屬在鯽魚幼體組織內的積累和分佈、 cd對鯽魚鰓和肝臟中sod活性的影響、 cd對鯽魚肝細胞和腎細胞超微結構的影響等，全面和系統地研究了水環境中重金屬暴露對魚類的毒性影響，初步探討了重金屬污染對魚類的個體? ?器官? ?組織? ?細胞? ?分子等各水平層次的影響，為制定漁業生產上預防性的管理措施提供科學依據，及時避免或減輕重金屬污染對水生生態系統造成的損害。
  3. The industrial development in shandong should be located on the above - mentioned superior industries, known as the industries which is " inoculated " by the high and new technology and upgraded such as the leading industry like mechanism, electron, petrifaction and etc, or the traditional industry like energy source, textile, foodstuff, metallurgy and etc, or the high and new technique industry like electronic message, biological engineering, ocean and etc. correspond with the development and grandness of these strategic industry, the famousbrand products including the products of the household appliances, the utility type sedan, the refine chemical industrial products, computer software, halobios pharmacy, industrial revelation ware and etc should be created gradually, and then improve the structure of the industrial products

    山東省工業發展應定位於上述優勢產業，即經過高新技術「嫁接」和換代升級的機械、電子、石化等主導產業，能源、紡織、食品、冶金等傳統產業，電子信息、生物工程、海洋等高新技術產業。相應于這些戰略產業的發展和壯大，逐步創造出包括家電、經濟型轎車、精細化工產品、計算機軟體、海洋生物制藥、工業新材料製品等在內的名牌產品，並進而改善工業產品結構。隨著中國加入世貿，為應對經濟全球化的挑戰，關于產業競爭力的研究成為一大熱點，但以往的研究都側重於從國家或企業的角度考慮問題，本文試圖從區域經濟的角度研究產業競爭力，探索提升產業競爭力的途徑，為研究中國產業國際競爭力提供借鑒和參考。
  4. 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。
  5. Two of the three processes, photoelectric effect and pair production, eliminate the photons undergoing interaction.

    三種過程中的兩種，即光電效應和對產生，使光子受到作用后消失。
  6. The generation of energetic ions during the interaction of a linear - polarized ultra - short ultra - intense laser pulse with solid targets are examined by particle simulation. three energetic ion populations are observed and the acceleration mechanisms are analyzed, respectively. the first population is pulled out from the target by the electron jet in front of the target

    模擬觀察到三群高能離子的產生，並對其加速機制一一進行了分析:在靶的前部，向外噴射的高能電子在靶前形成電子云，將一部分離子拉出靶面，形成第一群高能離子;激光驅動大量高能電子向靶內輸運，這些電子牽引靶前部的離子向前加速，形成第二群高能離子:高能電子很快穿透靶，在靶后形成電子云，加速靶后表面處的離子，形成第三群高能離子。
  7. In the paper, we analyze the reason and effect of the bremsstrahlung, calculate the dose in the linear section of the storage rings, and propose the defense project to shield it

    針對北京正負電子對撞機（ bepc和bepcii ）儲存環直線節結構特點，分析其中殘余氣體產生的軔致輻射，計算該氣體軔致輻射所產生的劑量並提出防護措施。
  8. 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。
  9. Continues to research, develop, and produce a variety of systems - including tactical and special purpose ( e. g., aerial refueling tankers, airborne early warning and collection, and electronic countermeasure ) aircraft - as well as modern turbofan engine technology

    繼續研製、開發和生產各種系統包括戰術飛機和特種飛機（用於空中加油、空中預警和資料收集及電子對抗等使命）以及現代渦扇引擎技術。
  10. We define the recombination time of excess electrons in p field as the minority carrier lifetime. in theory, we developed the equation between excess minority carriers lifetime and the open - circuit voltage decay ; moreover, the effect of capacitance to general open - circuit voltage is also investigated. both different efficiency solar cells are measured by the method and showed the relations between the minority carrier lifetime and the performance of solar cells, which provides great useful guidelines for fabricating high - efficiency silicon solar cell in industry

    根據太陽電池的工作原理，詳細地論述了用脈沖光源照射n / p結太陽電池時光電壓的產生，理論上給出了注入p區的電子復合帶來的開路電壓與少子壽命的關系，也研究了n / p結勢壘電容放電對開路電壓衰減的影響關系，推導了利用開路電壓隨時間衰減的關系來測量少數載流子壽命的理論公式。
  11. This thesis is devoted to studying those issues relevant to the interaction of ultra - short ultra - intense laser pulses with overdense plasmas, including the generation and transport of relativistic electron beams, the generation of quasistatic magnetic field, the energetic ions production, and the influence of preplasma on electrons acceleration

    本文的研究目的是：利用粒子模擬方法，對超短超強激光脈沖與高密度等離子體相互作用中高能強電流的產生和輸運、準靜態磁場產生、高能離子產生等物理過程進行研究。
  12. Production of pairs

    正負電子對產生
  13. Secondly, we measured the electrical properties of the ion - implanted samples by hall method ( square carrier concentration, square resistance and carrier mobility ). after comparing and analyzing, we can know that the electrical properties were affected by the difference of mn dose, the implantation of c and the annealing temperature

    其次，利用霍爾測試方法測量了每種離子注入樣品的電性質（方塊載流子濃度、方塊電阻及載流子遷移率） ，通過比較分析了解到mn元素注入劑量、 c元素的注入以及退火溫度的不同，都會對樣品的電性質產生影響。
  14. What is the theory of high - tc superconductivity ? what interactions can successfully pair electrons

    高溫超導的理論是什麼？產生電子對的相互作用是什麼？
  15. 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。
  16. Covalent bond a chemical bond in which one or more pairs of electrons are shared between two atoms

    共價鍵：一般指兩個原子接合時，通過形成共有電子對而產生的化學鍵。
  17. To the solution of how to further shenzhen " s development of hi - tech industry, i point out in my thesis as follows, to accelerate the strategy of relying on science and education to develop the city ; to develop electronic information technology, biological technology and new material technology, with hi - tech industry band as carrier and highlighting invention of system, technology and management ; to build some key hi - tech enterprises and well - known products ; to promote industrial upgrading ; to informationize with strength ; to attract elites ; to protect copy right ; to keep an eye on the risk of investment ; to better the investment environment ; to make shenzhen the base of production and exportation of hi - tech product, the base of hi - tech research and development, the base of transformation and transaction of its outcome, as well as the base of fostering hi - tech elites ; to try to make shenzhen a hi - tech city with clear scale advantage, outstanding industrial features, creation and investment in full bloom, lots of hi - tech elites and pleasant environment

    對深圳如何進一步發展高新技術產業的對策問題，我在論文中提出：加武漢理工大學碩士學位論文快實施科教興市戰略，以高新技術產業帶為主要載體，突出體制創新、技術創新和管理創新，重點發展電子信息、生物技術和新材料技術，培育一批高新技術骨幹企業和名牌產品，用高新技術改造和提升傳統產業，推動產業升級，加強信息化建設，吸引創業人才，保護知識產權，防範投資風險，優化創業環境，使深圳成為重要的高新技術產品生產和出口基地，高新技術研發和成果轉化、交易基地，以及高新技術人才培養基地，努力把深圳建設成為規模優勢明顯、產業特色突出、創新體系完善、創業投資活躍、科技人才薈萃、綜合環境優良的高科技城市。
  18. There exists strong magnetic field and abundant energetic particles in active coronal region, in magnetic field the extremely relativistic electrons will produce synchrotron radiation

    太陽日冕中存在較強的磁場和大量的高能電子，在磁場中極端相對論電子將產生同步加速輻射。
  19. Electro static have become so active subject all over the world, research it by many experts this article study electron industry electro static defend as task, primarily introduced below contents a ) the basic principle of electro static start with basic theory, put great emphasis on to speak the formation mechanism of the electrostatic, correlative physics vector and how is it accumulate and discharge

    靜電學科已成為國內外非常活躍的學科之一，成了許多專家學者的研究對象。本文以研究電子工業生產中的靜電防護為課題，主要介紹了以下內容靜電的基本原理從基本理論入手，著重講靜電的形成機理，與靜電相關的物理量及靜電是如何積累和泄放的。
  20. Ceramic - to - metal - to - seal is one key production craftwork of vacuum electronic parts of an apparatus, its quality playing a decisive role to airtight of products, concerning the properties of products and service life directly

    陶瓷?金屬封接是真空電子器件生產的關鍵工藝之一，封接質量對真空電器產品的氣密性起決定性的作用，直接關繫到產品性能及其使用壽命。
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