等同元素 的英文怎麼說

中文拼音 [děngtóngyuánsù]
等同元素 英文
if-and-only-if element
  • 等 : Ⅰ量詞1 （等級） class; grade; rank 2 （種; 類） kind; sort; type Ⅱ形容詞（程度或數量上相同） equa...
  • 素 : Ⅰ形容詞1 （本色; 白色） white 2 （顏色單純） plain; simple; quiet 3 （本來的; 原有的） native Ⅱ名...
  • 等同 : equate; be equal
  1. Through the ree charactheristics being studied, it suggests that the xenoliths from hannuoba, ximeng, and puning area have no the trend of lree enrichment, which ratios of lree / hree approximate 1. therefore, it is not different from archean lithospheric mantle

    稀土元素地球化學研究表明，漢諾壩、錫盟、普寧等地區包體則無lree富集的趨勢， lree hree接近於1 ，因此它們與太古代巖石圈地幔不同，稀土元素特徵表明它們遭受了強烈虧損。
  2. Another kind is queen ' s bed clothes, the manufacture base is in shanghai and hangzhou of china, the design of the products mainly comes from u. s. a., design style is containing elements of european renaissance period and neoclassicism, follow the fashion of the american - european furniture closely. “ queen ” serie products dominated by various designs and colors of printing as well as jacquard beddings

    另一類為女皇床上用品，生產基地在中國上海- - -杭州，產品的設計主要來自美國，款式設計涵蓋歐洲文藝復興時期及新古典主義等不同設計元素，緊跟歐美家居流行時尚。
  3. The understanding of biogeochemical cycle of hydrogen, oxygen, carbon, nitrogen, and sulfur elements in nature ecosystem have increased substantially in the past two decades owing to the improvement of gas isotope ratio mass spectrometer and the wide application of isotopic studies with these elements

    摘要近20年由於氣相同位素比值質譜儀的改良和氫、氧、碳、氮和硫等穩定同位素的廣泛研究，穩定同位素的研究技術已實質增加我們對于這些元素在自然生態系中生地化循環的了解。
  4. The elements such as copper, sliver and gold, the so-called coinage metals, are sometimes treated with the alkalis.

    諸如元素銅、銀和金等所謂的貨幣金屬，有時被與堿金屬一同看待。
  5. In recent years, the colossal magneto - resistance effect in rare - earth manganite perovskites of the type lni. xaxmno3 ( where ln is rear - earth irons la2 +, nd2 +, p2 + ; a is alkaline earth iron ca2 +, sr2 +, ba2 + ) has attract considerable attention in scientific studies due to its potential application. however, the poor temperature dependence of mr and the low - temperature mr effect and the ideal mr only in high field severely limit their practical utility. in this work, we prepared manganite perovskite lai - xsrxmno3 and soft - magnetic ferrite materials fe2o3 and ( ni, zn ) fe2o4 by using sol - gel method separately

    近些年來，人們發現在鈣鈦礦錳氧化物ln _ （ 1 - x ） axmno _ 3 （ ln為la ， nd ， pr等稀土金屬元素； a為ca ， sr ， ba等堿土金屬元素）中具有磁電阻（ magnetoresistance ）效應，由於它在磁記錄，磁傳感器方面具有廣泛的應用前景，同時也向傳統的磁記錄材料提出了挑戰，因而引起了物理學界的廣泛關注。
  6. Meanwhile, it was detected that the excess a13 + ions, to compensate the positive charge caused by the substitution of partial mg " ions by ti ions, occupy the t2 site in the six - membered rings in the sample of 1. 8 mgo 0. 2tio2 2. 2 a12o34. 6sio2

    2tio2 ? 2 . 2al2o3 ? 4 6sio2中用作價態補償的過量al3 +全部進入六元環t2位宜上。 xps的研究發現， zn 『 」 、 t廣的同溶使繭青石結構中的川、 st等元素出現了多種化學狀態。
  7. Through the study of characteristic of macroelement, microelement, rare - earth element, oxyhydrogen isotope, sulfur isotope, lead isotope, fluid inclusion etc, a conclusion can be drawn that metallogenic substance comes from the upper mantle with mixing of some substance from the upper crust latter. it is likely to have the same source with the surrounding rock

    通過對礦床的常量元素、微量元素、稀土元素、流體包裹體特徵、氫氧同位素、硫同位素、鉛同位素等特徵的研究，認為成礦物質主要來源於上地幔，與周圍巖石存在著同源的可能性，後期有一定的上地殼物質混入，成礦作用有三期，分別與區內的花崗巖、二長花崗巖脈、雲煌巖脈有關。
  8. The contents of metal elements in silk gland and silk fiber of b. mori silkworm have been detailedly analyzed by proton induced x - ray emission ( pixe ), inductively coupled plasma mass spectroscopy ( icp - ms ) and atomic adsorption spectroscopy ( aas )

    摘要用不同的測試方法，即質子誘導x射線發射（ pixe ） 、電感耦合等離子體質譜（ icp - ms ）和原子吸收光譜（ aas ）對桑蠶絲腺體和絲纖維中金屬元素的含量進行了詳細的表徵。
  9. Based on the studies of microthermometry, gas composition, liquid composition, rare earth elements, ore - forming elements and 13c, d, 18o of fluid inclusions from the mineralization district and the representative deposits, such as zacun gold deposit, shuixie copper - cobalt deposit, shiyancun stibium deposit and bijiashan stibium deposit, two metallogenic fluid systems have been distinguished, i. e., zijinshan metallogenic fluid system and gonglang metallogenic fluid system in weishan - yongping mineralization district

    礦化集中區及扎村金礦、水泄銅鈷礦、石巖村銻礦、筆架山銻礦等典型礦床流體包裹體的顯微測溫、氣相成分、液相成分、稀土元素、重金屬元素及~ （ 13 ） c ， d ， ~ （ 18 ） o穩定同位素的研究表明，雲南巍山-永平地區銅金多金屬礦化集中區存在兩個成礦流體系統：紫金山背斜成礦流體系統與公郎弧成礦流體系統。
  10. Strong negative 8 eu shows the granites are high evolved granite. ( 6 ) the tetrad effect of ree and the obvious fractionation between k - rb, y - ho, zr - hf, nb - ta, and sr - eu in the dajishan granites indicate that, the aqueous fluid pays an important role in the evolution of the granites, as well as indicate that there exist enough interaction between peraluminous melt and aqueous magmatic fluid. furthermore the fluorine played a very important role in this process

    （ 6 ）大吉山花崗巖類稀士元素具有「四重效應」配分的特點以及微量元素對kjrb 、 y / ho 、 zr艦f以及nb / ta發生明顯分異，暗示在花崗巖巖漿的演化過程中，經歷了充分的流體一熔體作用，同時分異出大量富含f 、 w等礦化劑元素和成礦元素的熱液流體，致使鎢礦的形成。
  11. The problems can be addressed, in part, through a strongly reactive alloying addition, such as mg, li and so on, and through reinforcement coating. in this paper sicp / al composites and sicp / al - si composites fabricated by the pressureless infiltration method. in order to found out the influence the different quantity of the reactive alloying addition mg si ce on the wetting between sicp and molten metal as well as the properties of mmcs, the behaviors of molten metal, the mechanical properties, micro - structure and the interfacial reactions was investigated respectively

    本文通過研究制備sicp al復合材料、 sicp al - si復合材料的過程中，熔融鋁液或鋁硅合金液的浸滲行為、 sic - al 、 sic - al - si之間的界面反應、復合材料的機械性能、微觀結構等，探討了不同量的活性元素mg 、 si 、 ce對sic顆粒與熔融基體之間的潤濕性及復合材料性能的影響。
  12. Monogastric animals, such as pigs and poultry, are not able to utilize phytate phosphorus efficiently, since they have only low levels of phytase activity in their digestive tracts, phytate also acts as an antinutritional agent in monogastric animals by chelating various microelements needed by the animal

    由於單胃動物如豬、雞等的消化道中植酸酶活性很低，導致它們無法有效利用植酸磷。同時，植酸也是一種抗營養因子，因為它能螯合許多動物生長所必須的微量元素。
  13. Some of preblems will be accounted by means of stained thin section microscopic identification, catholuminescence microscopic observation, trace elent analysis, carbon and oxgen isotope geochemistry, and fluid inclusion analysis

    認為利用染色薄片鑒定、陰極發光顯微鏡觀察、微量元素分析、碳氧穩定同位素測定及包裹體測溫等綜合手段進一步研究，最終將解決這些問題。
  14. The effects of various additives elements and doping methods on foam nickel electrode ' s performance were studied using constant current charge - discharge test. we compared two doping methods : mechanical mixing doping and chemical co - precipitation doping

    利用恆流充放電實驗等電化學測試方法研究了不同摻雜元素及摻雜方式對泡沫鎳電極的影響作用，對機械混合摻雜和化學共沉積摻雜進行了比較。
  15. Firstly, we generalize and analyze the advantages and present research of elliptic curve cryptography ; secondly, we study the basic theory of the ecc ; thirdly, we illustrate the safety of the ecc and discuss the elliptic curve key agreement scheme, elliptic curve encryption scheme and elliptic curve digital signature algorithm ; fourthly, we study fast algorithms of the multiplication and inversion multiplication of the element of in the underlying finite field f2m whose characteristic is two represented by the two basis of optimal normal basis and polynomial basis. we make improvements to the fast algorithm of the polynomial basis multiplication by hankerson and base on the experiments, we describe the properties and compare the advantages of the multiplication and inversion multiplication of the elements in f2m field under optimal normal bases and polynomial basis. results concluding from the study car be used as references in the realization of the elliptic curve cryptosystem ; fifthly, we overview the current fast algorithm of point multiplication, improve the fix base point comb algorithm, advance the speed of the whole system and remark the advantages and disadvantages of the popular algorithms based upon the experimental datas ; sixthly we realize the algorithm library of elliptic curve cryptography based on the f2m. only change slightly in our algorithm library can we realize the ecdh, eces, ecdsa based onf2m of anysize ; seventhly, we realize the ecc on two secure elliptic curves, including ecdh, eces, ecdsa

    本文首先介紹並分析了橢圓曲線密碼體制的優點及研究現狀；其次研究了橢圓曲線密碼體制的基本理論；第三，分析了橢圓曲線密碼的安全性並介紹了密鑰共享，加密，數字簽名等橢圓曲線密碼體制；第四，深入研究了特徵為2的有限域f _ 2m中的元素在多項式基和最優正規基表示下的乘法運算和乘法逆運算的快速演算法，並對hankerson等人提出的多項式基下的乘法運算的快速演算法作了改進，而且在實驗的基礎上不僅分析研究了f _ 2m域中元素在多項式基和最優正規基表示下的乘法和乘法逆運算的性能，還對這兩種基表示下的f _ 2m域中元素運算效率的優劣作了比較和研究，所得的結論可供在實現橢圓曲線密碼體制時參考；第五，研究了目前流行的計算橢圓曲線標量乘法的快速演算法，同時改進了固定基點梳形法，提高了整個系統的速度，並在實驗的基礎上分析研究了流行演算法的優劣；第六，實現了基於f _ 2m的橢圓曲線密碼體制的演算法庫，在我們的演算法庫中只需稍微改變便能實現基於任意尺寸的f _ 2m上的ecdh ， eces ， ecdsa等橢圓曲線密碼體制；第七，實現了兩條安全橢圓曲線上的橢圓曲線密碼體制，包括ecdh ， eces ， ecdsa 。
  16. Comparison of the characteristic parameters of immobile elements, such as ree, sc, th, ti etc and of the characteristics of sedimentology and mineralogy comes to a conclusion that the provenance of the sediment is different in the last glacial maximum and in the sub - interglacial stage, and they have the traits of mixed source. during the last glacial maximum the sediment in the outshelf of the southern east china sea was affected weakly by changjiang river and they are probably derived from the coast mountains of zhejiang - fujian province, which are near the southern east china sea

    通過對東海外陸架樣品的稀土元素和sc ， th ， ti等不活潑元素地球化學物源示蹤指標對比，再結合沉積學和礦物學特徵，判斷末次盛冰期與盛冰期以前的沉積物具有不同的物質來源，不同時期的沉積物都具有混合物源的性質，盛冰期東海南部外陸架沉積物受長江物源影響較小，可能來源於距東海南部較近的浙閩沿海山地。
  17. Based on the study of geologic characteristics, such as mineralogic assembladge, structural and textural features of granite of guidong granitic massif, and by using petrochemical, trace - element and isotopic data, and some petrochemical, trace - element and isotopic diagrams widely applied to the identification of geo tectonic environments, authors recognize that guidong granitic massif was emplaced in post - orogenic collision environment

    摘要本文在研究貴東花崗巖巖體巖石礦物組合、結構構造等地質特徵的基礎上，運用花崗巖的巖石化學、微量元素和同位素等分析數據，採用目前廣泛應用的幾種巖石化學圖解、微量元素和同位素圖解等方法，判別了貴東巖體形成的構造環境?造山帶后碰撞型。
  18. The thesis mainly investigated the bati _ 4o _ 9 ( bt _ 4 ), which has the lowest dielectric loss in ba - ti system, and ( ba, sr ) tio _ 3, the a position substitute compound of batio _ 3. the dielectric properties of bt _ 4 / bst with different preparation way and different elements doping were investigated. a archimedes method, xrd, sem, impedance analyzer, network analyzer and hakki - coleman method were used to investigate the density, phase formation, microstructure, dielectric properties and doping mechanisms

    本論文以在ba - ti系中具有最低介電損耗的bati _ 4o _ 9 （ bt _ 4 ）高頻介質陶瓷和batio _ 3a位sr取代而得的（ ba ， sr ） tio _ 3 （ bst ）高頻介質陶瓷作為研究對象，對不同粉體制備方法制備的bt _ 4 / bst高頻電介質材料進行不同元素的摻雜，運用阿基米德方法， x射線衍射分析儀，掃描電子顯微鏡和阻抗分析儀，網路分析儀， hakki - coleman法等方法手段和測試儀器測試燒成樣品的密度，相組成情況，微觀結構和介電性能，探討造成介電性能起伏的形成機理。
  19. The cathodes both of the prepared tungsten - based barium - tungsten cathode and mixed metal barium - tungsten cathode have, not only high current density, but also a long life, simplified procedure and stable performance, and so on. and we made certain two good additives cr2o3 and ni2o3 that make the cathode performance more excellent

    2 ）對不同元素配比的二元和三元混合陰極基底的制備工藝和發射性能開展了實驗研究，在增大發射能力，延長壽命和降低燒結溫度等方面有重要進展，取得了有價值的階段成果。
  20. It happens to generate a code that is equivalent to having a

    Arrays類生成等價于擁有相同元素的
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