電子正電子對 的英文怎麼說

中文拼音 [diànzizhēngdiànziduì]
電子正電子對 英文
electron positron pair
  • 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...
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 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...
  • 電子 : [物理學] [電學] electron
  1. At present, the investigation of trading model in the native still rest on realising the traditional trading model using information skills, little work has been done in lucubrating the business model and exercising successfully. although foreign investigation has gained some successes and brought forward some typical trading models such as fixed price selling, biliteral multi - step negotiation and all kinds of auction, there still exists some problem such as information overloading or resource mazing in these models, which aggravate users " burden. how to realise an efficient, intelligent trading model based on the multi - agent technique has become an important task for the research of electronic commerce

    目前，國內對電子商務的研究還停留在以信息化實現傳統交易模型的層次上，真正深入研究業務模型並成功應用的還很少?國外研究雖然取得一定突破，並提出了幾種典型的市場交易模型如:定價交易，雙邊多步協商交易，以及各種形式的拍賣拍買交易等?但這些模型大都存在信息過載或資源迷向的問題，增加了交易主體的負擔，如何應用多代理技術實現一種高效
  2. In this dissertation, refining grains, depositing conductibility carbon film on the surface of the particles and doping mg ~ ( 2 + ) into the lattice of lifepo4 were adopted to improve the electro - chemical performance of the cathode material. the cathode material lifepo4 mainly has two flaws, the low conductibility and the slow li + ion diffusion, which have a bad influence on the performance of the cathode material

    論文主要針對制約正極材料lifepo _ 4性能的兩大致命的缺點，即低的電子導電率和低的鋰離子擴散速率，採取材料顆粒的細化、顆粒表面沉積碳導電層以及mg ~ （ ~ （ 2 + ） ）離子摻雜等措施對其進行改性探索，以提高正極材料lifepo _ 4的電化學性能。
  3. For electrodeposition by dc methods, the metals deposite uninterrupted and the particles were also embeded uninterrupted into the coatings ; for electrodeposition by pc method, the particles with biggish volume were desorbed from the coatings and returned to the electrolyte again owing to the presence of pulse interval ; for electrodeposition by prc method, the particles carried positive charges are much more easy to desorb from the coatings owing to the effecf of reverse pulse current combined with pulse interval, in addition, the reverse pulse current also could dissovle the metals, further accelerates the desorption of particles, thus the particles size embeded in the coatings by prc method is the least

    直流電沉積時，基質金屬的沉積連續進行，粒子在電極表面不間斷嵌入鍍層;單脈沖電沉積由於脈沖間歇的存在使得具有較大體積的粒子會脫附，重新回到溶液中;採用周期換向脈沖時，反向脈沖電流使表面荷正電的較大的粒子更易從電極表面脫附，同時，反向脈沖電流對基質金屬的溶解作用，也會促進粒子的脫附，因此鍍層中復合粒子尺寸最小。隨著鍍層中粒子復合量的增加，三種鍍層的晶粒都明顯細化，說明al _ 2o _ 3的存在阻止了晶粒的長大，提高了電沉積過程中晶核的形成速率。
  4. New york ( reuters health ), feb 15 - in infants with congenital hyperinsulinism, positron - emission tomography ( pet ) scans can accurately differentiate between focal and diffuse disease, and pinpoint focal lesions, according to a study published in the february issue of the journal of pediatrics

    紐約（路透社健康專欄） ， 2 . 15 - - -根據發表在兒科雜志二月刊上的一項研究，對于有先天性高胰島素血癥的嬰兒，正電子發射斷層掃描（ pet ）可以準確的區分病灶和彌散性疾病，並且精確地找到局灶性損害位置。
  5. Positron emission tomography is a new generation image test equipment, which works through functional metaboly of tissue to help doctors to make a diagnosis. pet is of great importance to early diagnosis of tumors and the test of pathological changes of organs

    Pet全稱為正電子發射斷層掃描成像系統，是通過組織的功能代謝來診斷疾病的新一代影像檢查設備，對于腫瘤的早期診斷及各器官病變的檢查均有重要意義。
  6. E - business, as a dominating commercial mode in new times, is greatly impacting on the management of traditional business

    眾所周知，作為網路經濟時代主流的商業模式?電子商務正對我國企業的經營管理造成巨大的沖擊和影響。
  7. Radiation effects have been investigated up to - 30 dpa by the heavy ion irradiation simulation and positron annihilation lifetime techniques in the home - made modified 316l stainless steel and the commercially available stainless steel and tungsten, which are used as the beam window materials for the spallation neutron source in accelerator driven radioactive clean nuclear power system ( ads ). their radiation resistance properties are compared

    本工作採用重離子輻照模擬和正電子湮沒壽命測量技術研究了加速器驅動潔凈能源系統（ ads ）散裂中子源束窗材料鎢、普通不銹鋼和國產改進型316l奧氏體不銹鋼在0 30dpa輻照劑量范圍的輻照效應，並對它們的抗輻照性能作了比較。
  8. So far, existing brain function evaluation techniques includes electroencephalogram ( eec ), magnetoencephalogram ( meg ), positron emission tomography ( pet ), functional magnetic resonance imaging ( fmri ) etc. among them, the technique using event - related potential ( erp ) contained in eeg features high temporal resolution, low costs and convenient application

    到目前為止，探測大腦活動的方法有eeg （腦電圖） ， meg （腦磁圖） ， fmri （功能磁共振成像） ， pet （正電子發射斷層掃描）等。其中利用包含在eeg中的erp （事件相關電位）進行的研究，能達到毫秒級的高時間解析度，而且器械成本低應用方便，對探索人腦瞬息萬變的信息處理機能（認知機能）無疑是很有幫助的一項技術。
  9. 2. we made a correction of the particles " velocities due to the coulomb collision among electrons and ions ( including electrons to electrons, ions to ions and electrons to ions ) with two - body collision model [ 76, 77 ] in our code

    本文運用兩體碰撞模型，對電子和電子、電子和離子、離子和離子之間兩體庫侖碰撞對速度的改變作了相對論性修正。
  10. New york ( reuters health ) dec 22 - positron emission tomography ( pet ) following infusion of [ 18f ] fluorodeoxyglucose ( fdg ) is an effective means of predicting response to neoadjuvant chemotherapy in patients with breast cancer, french researchers report in the december 1st issue of the journal of clinical oncology

    紐約（路透社健康） 12月22日- 《臨床腫瘤學》雜志12月第1期上法國研究人員報道，對乳腺癌患者新輔助化療腫瘤的反應進行預測，正電子發射斷層攝影（ pet ）輸注[ 18f ]氟脫氧葡萄糖（ fdg ）是一種有效手段。
  11. The basic idea of positron imaging is injected chemical compounds labeled with positron - emitting nuclides into a body, then the distribution of the nuclides from the annihilation of positron and electron can be measured

    可見，正電子成像系統的相關研究可由兩部分組成：成像裝置的研究、圖像重建的研究。本論文正是針對這兩個方面。
  12. In czochralski silicon crystals ( czsi ) through fast neutron irradiation, formation and conversion of defects were investigated using fourier transform infrared spectroscopy ( ftir ), positron annihilation technology ( pat ) and scanning electron microscope ( sem ). the results showed that fast neutron irradiation induced large quantity of metastable defects which can be the capture centers of positron, positron annihilation average lifetime of samples increased with increasing of irradiation dosage. positron annihilation average lifetime of irradiation samples through dosage up to 1 1018 n. cm - 2 tended to constant

    本文對直拉硅樣品進行了不同劑量的快中子輻照，在硅中引入大量的亞穩態缺陷，研究這些亞穩態缺陷的形成，並在較寬的溫度范圍內對輻照樣品進行了退火處理，研究退火后亞穩態缺陷的轉化及同硅中氧的相互作用，應用傅立葉變換紅外光譜技術（ ftir ） 、正電子湮沒技術（ pat ）和掃描電鏡（ sem ）進行了測試。
  13. According to the concept of linear - fitting correction, the correction factors for correcting the test - piece image are obtained by reference images and their corresponding means captured at fixed tube voltage and different tube current

    此方法基於線性擬合校正的思想，在一定管電壓下，改變管電流採集一組探測器基準圖像，利用這組圖像與其相應均值進行擬合，再把擬合系數作為校正因子對試件成像進行校正。
  14. At the same time, the paper give out the investigation of x - ray interferometry in diagnostics of the electron density of laser produced plasma, and derived a modified term for wkbj solutions. at last, we proved these by numerical simulation

    接著，本文給出了x射線激光干涉法在激光等離子體電子密度診斷中的理論研究，給出了對原有干涉法理論修正，並用數值計算中加以了驗證。
  15. Lisa mosconi and colleagues at the new york university school of medicine used positron emission tomography, or pet, scans to look at the brains of 53 normal elderly people

    美國紐約大學醫學院的莉薩墨斯科尼和其同事使用正電子發射斷層成像技術，對53名正常的中老年人進行了腦部掃描。
  16. In one common application, for instance, patients are given glucose with positron emitters attached, and their brains are monitored as they perform various tasks

    如在一起普通的病例診斷中，病人們被注射了帶有正電子發射器的葡萄糖。然後讓病人做各種不同的工作，對他們的大腦進行監測。
  17. This thesis can be divided into ten chapters, the ieee1451 networked smart sensor module is introduced at length, the development of network capable application processor based on dsp platform and a series of smart transducer modules are discussed in detail, the application layer communication methods of networked smart sensor and correction, compensation methods and correction engine are deep researched, the key technologies of support software for networked smart sensor are presented, at last, multi - distributed measurement & control system modules are built, practices show that the standard networked smart sensor developed are available and the ieee1451 standard is preponderant

    論文在標準校正模型基礎上對傳感器校正補償方法進行了研究，包括數據插值、最小二乘以及神經網路方法。在方法研究的基礎上基於matlab和vc + +環境開發了傳感器模型建立軟體，能夠生成ieee1451標準的校正電子數據表格。在研製的網路化智能傳感器基礎上，構建了多個基於以太網的分散式測控系統模型，並且開發了系列支撐演示軟體。
  18. The method is to measure the cable in transmission and to infer the characteristic of the cable from a set of three pairwise measurements and get the correction factor to correct the measured data

    該方法將三條電纜線兩兩組合成三對，進行三次連續的測量，從而得出電纜線的傳輸特性和校正因子，對測得的信號進行校正。
  19. Positron emission tomography ( pet ) is the functional imaging equipment with good specificity among the modern nuclear medicine instruments. it can make the noninvasive diagnosis of coronary artery disease ( cad ), brain disease and tumor in their early changes. therefore, it plays a very important role in the field of modern medicine

    正電子發射斷層掃描儀（ pet ）是核醫學儀器中一種具有較高特異性的功能成像設備，它能夠對心腦血管疾病及腫瘤病變進行早期的無損診斷，在現代核醫學領域里起著十分重要的作用。
  20. Based on the introduction of the systematic structure and working principle of pet, the thesis mainly described the realization of the partial function in the mechanical and electrical control system. furthermore, the thesis referred the design of a new circuit of fan - out of high frequency clock

    本文在介紹正電子發射斷層掃描儀系統結構及工作原理的基礎上，著重對該儀器機電控制系統的部分功能實現作了詳盡描述，並且介紹了一種新型的高頻時鐘扇出電路的設計。
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