稀土類 的英文怎麼說

中文拼音 [xītǔlèi]
稀土類 英文
terres rares
  • 稀 : Ⅰ形容詞1 （事物出現得少） rare; scarce; uncommon 2 （事物之間距離遠; 空隙大） sparse; scattered 3...
  • 類 : Ⅰ名1 （許多相似或相同的事物的綜合; 種類） class; category; kind; type 2 （姓氏） a surname Ⅱ動詞...
  1. Taiping maifan mineral contacts with migmatitic granite and grandiosity, the mother rock is granite which include a lot of potassium elements and the major mineral of maifan stone is plagiocase, k - feldspar, minor mineral is biotite, muscovite, quartz and so on.,

    麥飯石的主要礦物為斜長石、鉀長石，次生礦物為黑雲母、白雲母、石英等，巖石化學類型屬鈣堿系列，主要微量元素和稀土元素均與中華麥飯石相近。
  2. The discovery of the colossal magnetoresistance ( cmr ) in hole - doped perovskite manganites ra1 - xmxmno3 ( ra is a trivalent rare - earth ion and m is a metal ion ) has attracted much attention since 1989 due to not only its technological applications in magnetic recording and sensor, but also the effect of the strong correlation concerning metal - insulator transition in the field of basic research. since then, several physics models have been suggested to explain the mechanism of cmr. however, the exact mechanism of cmr remains to be done

    自1989年在摻雜鈣鈦礦型錳氧化物ra _ （ 1 - x ） m _ xmno _ 3 （其中m為金屬離子， ra為三價稀土離子）中發現龐磁電阻（ cmr ）以來由於其在磁記錄、磁傳感器等方面潛在的應用前景，以及金屬?絕緣體相變等所涉及的強關聯效應，使該類化合物吸引了物理學界的廣泛注意。
  3. Moreover, the quenching concentration of eu is raised. on the basement of successful synthesis of two - components oxide, edta complexing sol - gel method was expanded and applied to effectively synthesis nanosized muti - components oxide, such as la1 - xsrx fe o3, lafe1 - xcuxo3, la1 - xsrx coo3, laco1 - xcuxo3 because edta can bind with most metallic elements of the periodic table, this technique become a versatile tool in the production and study of new nano materials of multi - component complex oxides. a economic and new process has been studied to synthesis la2o3 nanocrystalline, using nh4hco3 as precipitant

    河北大學理學博士學位論文對于單一組份的稀土氧化物，探索出一條更經濟、更方便的合成方法，即:用碳酸氫錢做稀土沉澱劑，成功地制備了納米l匆03 ，並對中間產物碳酸斕及其燒成的氧化斕分別進行了ir 、 tg一dta 、 sem 、 xrd分析研究，確定了碳酸憫的組成，氧化斕的物相、結構，並發現分散劑的種類對微觀形貌有一定的影響。
  4. The effects of the different kinds of rare earths and the doping amount of them on magnetic properties of bafe, 2o19 ultrafine powders ( including the specific saturation magnetization, the specific remanent magnetization and coercive force ) were firstly discussed systematically

    首次查明了鋇鐵氧體粉末的磁性能（包括比飽和磁化強度、比剩餘磁化強度和內稟矯頑力）隨稀土元素種類及其摻雜量的變化規律。
  5. The light - storing fiber was produced from fluorescent masterbatch which was composed by basic silicate or alumina with thulium

    摘要蓄光纖維是通過用堿土類硅酸鹽熒光粉體或氧化鋁加稀土元素組成的發光粉體，製成一定濃度母粒切片，用母粒來紡絲。
  6. The main element analysis of whole rocks, the ree analysis and the trace element analysis have been done for the granitoid samples in this area. the chemical composition analysis has been done for the amphiboie and biotite minerals. the epma and x - ray powdered crystal diffraction have been done for k - feldspar, plagioclase, amphiboie, biotite, quartz, magnetite, titanite

    對本區花崗巖類樣品進行了全巖主量元素、稀土元素及微量元素分析，對角閃石和黑雲母單礦物進行了化學成分分析，對鉀長石、斜長石、角閃石、黑雲母、及石英、磁鐵礦、磷灰石和榍石進行了電子探針和x射線粉晶衍射分析。
  7. Abstract : the effects of terbium ion on the conformation of calmodulin and on the interaction between calmodulin and melittin have been studied by the endogenous fluorescent spectrometry of calmodulin and melittin, and the sensitized fluorescent spectrometry of terbium ion, respectively. the results show that terbium ions have a tight binding site in the i and ii metal - binding sites of calmodulin. the conformation of calmodulin induced by terbium ion can bind melittin and transfer the tryptophane residue of melittin to a relatively hydrophobic environment, while the binding of melittin to calmodulin produces effect on the binding orders of terbium ion in camodulin. results from ft - ir spectrometry have revealed that upon binding of lanthanum ion, apo - calmodulin undergoes a conformational change with the increase of - helix content and the decrease of - sheet content. melittin ' s binding to calmodulin has no effect on its conformation induced by the binding of lanthanum ion to calmodulin

    文摘:分別用鈣調蛋白和蜂毒素的內源熒光光譜以及鋱離子的敏化熒光光譜考察了鋱離子對鈣調蛋白構象變化以及對鈣調蛋白與蜂毒素相互作用的影響.結果表明，鋱離子首先結合在鈣調蛋白的第和第位點，鋱離子不影響鈣調蛋白與蜂毒素的相互作用，蜂毒素與鈣調蛋白作用后不影響鋱離子在鈣調蛋白上的鍵合順序.傅里葉變換紅外光譜結果表明三價的鑭離子與鈣調蛋白作用使鈣調蛋白的螺旋結構增加，折疊結構減少，與鈣離子對它的二級結構影響相類似.稀土離子在鈣調蛋白-蜂毒素復合體系中主要與鈣調蛋白作用
  8. 3 brass powder : three kinds of powder, type10, type20 and type30, can been offered. rare earth element and other trace amount of alloy element can been added

    黃銅粉：分10 、 20 、 30黃銅粉，可添加稀土等微量合金元素，分為用於含油軸承及金剛石製品兩類。
  9. The results indicate that the samples ( cas : eu, sm srs : eu, sm and casrs : eu, sm ) are all facial cubic structure

    改變稀土摻雜種類制備了cas ： ce石和cas ： yb三ffi樣品，改變基質種類制備了k 。
  10. A series of preparation conditions and parameters were systematically studied. it is concerned that the effects of prepared method of precursor, material synthesize method, fired atmosphere, fired temperature, fired time, flux kind and content, rare earth concentration and kind and matrix on the microstructure and optical storage properties of the samples. at the same time, the optical storage mechanism was discussed in certain extent

    系統地研究了一系列的工藝條件及參數，討論了前驅物制備方法、材料合成方法、灼燒氣氛、灼燒溫度、灼燒時間、助熔劑種類及含量、稀土摻雜濃度及種類、基質成分對樣品微觀結構及光存儲性能的影響，同時對樣品的光存儲機理作了一定程度的探討。
  11. As a new type of functional material which has been developed in recent years, rare earth - iron giant magnetostrictive materials has many advantages, such as large magnetostriction strain, high coupling coefficient, quick response, high energy density and so on, which make it have good application future in fields of precision driving and microdisplacement based on the new type of functional material, this paper uses new principles and approaches to study this kind of microdisplacement actuator and its precision driving system

    稀土鐵系超磁致伸縮材料就是近年來發展起來的?種新型的功能材料，具有磁致伸縮應變大、機磁耦合系數高、響應速度快、能量密度高等優點，已在精密驅動及微位移執行器等領域顯示出良好的應用前景。本論文以這種新型的功能材料為基礎，以基於該類材料的微位移執行器及其精密驅動系統為研究對象，並採用一些新的原理和方法，為新型、高性能微位移執行器及其精密驅動系統的研究提供一個新的途徑與思路。
  12. Abstract : according to the composition, the thermal - water sedimentary rocks of yinmin formation in the dongchuang copper ore field can be divided into nine types, of which skarnoid, cupric magnetite carbonate, paracontemporaneous breccia formed in thermal water processing are confirmed and named in this study

    文摘:東川銅礦田因民組熱水沉積巖根據主要成分可分為9大類，其中類夕卡巖、含銅磁鐵碳酸鹽巖、熱水膠結準同生角礫巖為本次研究確定和命名，其礦物組合、微量元素、稀土元素等地球化學特徵表明：它們是海底火山噴流沉積作用的產物。
  13. Actively handling the development of the export, we increase the import rapidly, such as electrolytic copper, scrap metals, ferrous metals and other large quantity of producer goods and so on and so forth

    出口產品有銅製品、稀土產品、貴稀金屬以及機電、五金、化工、輕工等七大類50多個品種，在積極發展出口貿易的同時，進口貿易也迅速增長，如電解銅、廢金屬、黑色金屬和其它大宗生產物資等。
  14. Character of electromagnetic torque is analyzed subsequently. the dissertation provides a practical method of calculating torque in the process of starting

    論文對于稀土永磁同步電動機電磁設計進行深入細致的分析，得出了該類電機設計的基本準則。
  15. There is a close relation between mesozoic tectonic evolution, fluid evolution, petrogenesis and mineralization in the manzhouli - e ' erguna region in the northeast of the northern orogenic belt, china, and three evolution stages of the mesozoic tectonic - fluid - petrogenetic and metallogenetic system are proposed out : 1 ) acompanied by ree and cu mineralization, the calc - alkaline volcanic rocks and mantle - crust mixed type granite occurred under the regional tension tectonic background caused by the mongolia - okhotsk residual ocean that was closing in scissors form in the early - middle jurassic. 2 ) acompanied by pb, zn and ag mineralization, the calc - alkaline and alkaline volcanic rocks occurred under the regional shear - compression tectonic background in the late jurassic. 3 ) acompanied by u, f, pb, zn and ag mineralization, the caic - alkaline and alkaline volcanic rocks occurred under the regional tension tectonic background in the early cretaceous

    摘要本文討論了北方造山帶東北段滿洲里額爾古納地區及其毗鄰區中生代構造流體成巖成礦系統及其演化的三個不同階段： 1 ）早中侏羅世張性「似裂谷環境」下所形成的中基性堿性火山巖、同熔性花崗巖及深源流體活動形成的稀土礦床和斑巖性銅鋁礦床； 2 ）晚侏羅世擠壓剪切環境下所形成的酸性火山巖、斑巖類及深源流體活動所形成的鉛鋅銀礦床； 3 ）早白堊世張性環境下所形成的基性堿性火山巖及深源流體活動所形成的鈾礦床、金銀礦床及螢石礦床。
  16. The yinachang fe - cu - ree deposit is one of typical deposits and mainly occurs in yinmin formation of kunyang group of middle proterozoic epoch. this paper mainly reports the results of investigation on the ree geochemistry of various rocks and minerals, the sources of ore - forming materials and the age of mineralization. the preliminary mechanism of sudden ree enrichment and mineralization in middle proterozoic has been interpreted

    本論文選擇迤納廠礦床為主要研究對象，系統研究礦床不同類型巖（礦）石和礦物的稀土元素地球化學特徵，探討富稀土的成礦流體、成礦物質來源和稀土元素成礦時代，揭示昆陽裂谷初期因民組稀土元素富集的地球化學機制。
  17. Eu2 + ion activated strontium aluminate phosphors are a kind of photoluminescent materials with high brilliance, long afterglow and stable performance

    稀土銪離子摻雜的鋁酸鍶基質發光材料是一類發光亮度高、余輝時間長、性能穩定的長余輝發光材料。
  18. Through field investigation and analysis indoor, with studying all hydrochemistry data in detail, including macro components and micro components, the author finds out the hydrochemistry feature of ground water. for further specifying the ground water system, with cluster analysis of macro components of surface water and ground water in total 147 samples and the analysis of micro components, including ree, the main ground water systems are distinguished by and large, especially the ground water system main of fault no. 7 and fault no. 15 water bearing belts which have differences at macro and micro components between the two ground water systems, moreover, the main hydrogeochemistry effects are established such as lixiviation, oxidization, precipitation and mixing effect, especially the mixing effect which result in the complexit y of the hydrochemistry of deep bearing tectonic fracture water. based on them, the hydro geological model of upper dam base is established, meanwhile the author summarizes the hydrochemistry feature of weathering crevice water, surface tectonic crevice water and deep tectonic crevice water

    為此，本文以大崗山壩區水文地球化學問題為研究對象，通過野外調查和室內分析，詳細的研究了壩區水化學資料，包括宏量組分、微量組分，查明了壩區地下水水化學特徵，對採集的147個地表及地下水樣的宏量組分進行聚類分析，結合微量元素，稀土元素的研究，並應用二氧化硅地熱溫標確定了深部構造裂隙水的熱源深度，基本區分了壩區各個主要地下水水系，特別是以f7 、 f15斷裂含水帶為主的地下水系，它們的宏量組分、微量組分以及稀土等方面均存在差異，以此為基礎，結合壩區水文地質條件，建立了壩區的上壩址的水文地質模型，同時通過分析了壩區花崗巖區的水化學資料，確立了壩區主要的水文地球化學作用，分別為：溶濾作用、氧化作用、沉澱作用、以及混合作用，混合作用是導致深部承壓裂隙水水化學復雜的主要原因，並總結了壩區風化裂隙水、淺部構造裂隙水、深部構造裂隙水的水化學特徵。
  19. The study of regional geological setting mineralization environment, occurence mode of ore bodies, ore characteristics, metallogenic phase, trace elements and rare earth elements, ore - forming mechanism, ore - controlling conditions, ore types and prospecting marks of the gold deposit along kangur ductile shear zone has a certain instructive significance on setting up a regional metallogenic model and identification marks of gold of ductile shear zone type along kangurtage, and on probing into metallogenic regularity and comprehensive prospecting model

    摘要通過對康古爾韌性剪切帶型金礦床的區域地質背景和成礦環境、礦體產出形態、礦石特徵、成礦階段、礦床微量元素及稀土元素、礦床形成機理、成礦控制條件、礦床類型、找礦標志的研究，對成礦規律和建立綜合找礦模型均具有一定的指導意義。
  20. Polyvinyl chloride ( pvc ) heat stabilizers including lead salt heat stabilizers, the metal stearate heat stabilizers, organo - tin heat stabilizers, re heat stabilizers, organic antimony heat stabilizers, hydrotalcite heat stabilizers and the auxiliary heat stabilizers research progress are reviewed and the development trend of the stabilizers is prospected

    摘要介紹了聚氯乙烯熱穩定劑包括鉛鹽類熱穩定劑、金屬皂類熱穩定劑、有機錫熱穩定劑、稀土類熱穩定劑、有機銻穩定劑、水滑石熱穩定劑以及輔助熱穩定劑的研究進展，並且概述了熱穩定劑的發展趨勢。
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