輕稀土 的英文怎麼說
中文拼音 [qīngxītǔ]
輕稀土
英文
lree-
The lighter rare-earth metals, from cerium to europium in the first half of the series, have more complex crystal structures than the heavier elements.
輕的稀土金屬，從鈰到銪的前一半序列比重元素具有更為復雜的晶體結構。Comparative studies of ree geochemical characteristics of various geologic bodies in the deposit indicate that the various ores and alkaline volcanic rocks contain abundant ree, specially lree the chondrite - normalized patterns of both ores and alkaline volcanic rocks show a strong lree enrichment and positive eu anomaly, in contrasting with the dolostones which show slight lree enrichment and moderately negative eu anomaly
同期成礦流體從早期到晚期（塊狀礦石條帶狀礦石） ，輕重稀土分異變小，稀土總量增加，條帶狀礦石中稀土含量最高;礦石黃銅礦6345值變化在一0 . 3編到2 . 8 % 。范圍，顯示慢源硫特徵;菱鐵礦6 』 3c （ 8 % 。Study on the anti - tumor effect and mechanism of light thulium compound
輕稀土化合物抑癌作用及機制的研究The result shows that with the addition of rare earth elements, ultrasonic irradiation and magnetic field, the chemical component, surface configuration, microstructure and properties of electroless co - ni - b and co - fe - b alloy changes remarkably. such kind of change can be described as the followings. firstly the depositing speed of electroless alloy bath is raised while the polarizability and cathodic overpotential are reduced ; secondly the surface quality of the alloy coating and adhesion of the coating and matrix are improved ; thirdly in the coatings the content of the elements in the transient group increases, but the content of cobalt decreased ; fourthly the amorphous structure is transformed to microcrystal structure and polycrystal structure ; fifthly the microhardness and wear resistance of the coating are enhanced ; sixthly coercitive force is reduced, and magnetoconductivity of the coating is increased ; lastly the magnetic intensity of the coating increases with the addition of energy and light rare earth elements such as ce, la and decreases with the addition of heavy rare earth elements such as y. on the other side, when the alloy coatings passes through the heat treatment under the temperature of 250 or 500, their properties will change
結果顯示化學沉積co - ni - b 、 co - fe - b工藝在稀土元素（ ce 、 la 、 y 、 dy ） 、能量（超聲波、磁場）介入后，沉積過程、合金成分、鍍層形貌結構和性能都有顯著變化，表現在：鍍液的陰極極化過電位和極化度降低，沉積速度提高；鍍層的結合力、表面質量改善；鍍層中過渡族元素的含量增加，輕元素硼的含量降低，同時證實了稀土元素與過渡族元素共沉積的可能性；鍍層的顯微結構由非晶態向微晶和多晶態轉變；鍍層的顯微硬度與耐磨性提高，力學性能優化；鍍層的矯頑力降低；磁導率提高；鍍層的磁化強度在能量（超聲波、磁場）和輕稀土元素ce 、 la介入后提高，重稀土元素y介入后降低。In this paper we put fonvard the method of introducing the light and middling lanthanon into the tb - fe - co magneto - optical materials by taking advantage of the higher saturation magnetization intensity, higher anisotropy and higher magneto - optical effect of light and middling rare - earth. moreover the law and mechanism of how the addition affect the magneto - optical property of the films were discussed
本文是在比較、總結現有關于tbfeco磁光薄膜的理論和背景研究的基礎上，利用輕、中稀土元素的高飽和磁化強度、高磁晶各向異性、高磁光效應的優點，提出在傳統的tbfeco磁光材料中摻入輕、中稀土元素的方法。Activated agent of cerium that is abundant and cheap together with a little terbiumas additive is used in the study, to research and explore luminescent mechanism of aluminates strontium
本研究擬選用原料豐富、價格便宜的輕稀土元素鈰作敏化劑，以鋱作激活劑，對其在鋁酸鍶基體中的發光機理這一新領域進行研究和探討。The chances of heavy metal into the plant cell were reduced and stress alleviated. ultrastructural observation of leaf cells of myriophyllum verticillatum linn, showed that la3 + coule alleviate the injury of cell structure produced by cr6 +
對元素含量的測定表明，稀土元素降低了植物對重金屬的富集量，兩者表現出拮抗作用，減少重金屬離子進入植物葉片細胞的機會，從而減輕了毒害作用。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。This important tectonic zone parallel to the isotopic geochemical steep zone, which represented a suture line between the yangtze and cathaysian blocks. the geochemical evidence of the jianshui volcanic rocks from the sw part of shizong - mile zone shows that their lithologic types are tholeiites with the comparative flat ree patterns and enrichment in th, depletion slightly in nb, ta, and flat hfse. thus, they may be formed in a back - arc basin with the characteristics between morb and island - a
該構造帶西南段的建水火山巖地球化學特徵研究表明，該火山巖為拉斑玄武巖，具有較平坦的稀土分配型式， th較富集， nb 、 ta輕微虧損，高場強元素分佈較平坦，具有介於島弧和morb之間的地球化學特徵，可能形成於弧后盆地環境。Cu - ni sulfided mine complex locate in baimazai of jinping county is sub alkali iron - super iron, it ' s zoning is clear and it ' s ni - cu - co melting first and enrichment, its rare earth is rich in right lean light rare earth, but eu in olive rock is serious to be bad, gd - tb is tittles negative abnormity. above - mentioned show that the mineral is cone from mantle, and didn " t mix with crustal substance, and continent tholeiite magma turning into continent tholeiite emplacement after by surging
金平白馬寨銅鎳硫化礦床雜巖體分帶明顯、屬亞堿性鐵質-超鐵質巖、具ni - cu - co三元素先熔離，后富集的規律、稀土配分為右傾斜輕稀土富集型，但橄欖巖銪虧損顯著， gd - tb微小負異常，顯示成礦物質來源地幔，與地殼物質無混染和大陸拉斑玄武巖漿上涌后變為大洋拉斑玄武巖漿侵位特點。When rees widely enter into environment and human body inevitably, peoples begin to pay more attention to the accumulation of rees in organism and the effect on the health of human body, this research consists of two parts : in the first part, the distributing rule of la and y in different tissues and organs were studied by adopting inductively coupled plasma mass spectrometer after organism absorbed it
本研究內容分為兩部分： （一）採用電感耦合等離子質譜技術研究了生物體攝入輕稀土元素鑭和重稀土元素釔后在不同組織器官的分佈規律，同時測定了經稀土元素處理后的生物體的早期生物量，並就稀土元素的攝入量與組織器官內的積累量進行了相關性分析。Ceo2 is a cheap and of use wide light rare earth oxide material
Ceo _ 2是一種廉價、用途極廣的輕稀土氧化物。In this work, the preparation and properties of magnetostrictive material and mnbial thin film are studied
本文對含輕稀土磁致伸縮材料及mnbial薄膜的制備及性能進行了研究。Simultaneous on - line analysis of total and individual rare earth elements in light rare earths extraction process by multichannel analyzer
輕稀土萃取分離中稀土總量和分量的同時在線測定By analyzing and generalizing minerogenetic and geological background, mineral constituent, rare - earth element, isotope and typomorphic feature of sulpurization mineral, finally, we made a conclusion that fankou desposit resulted from the hot spring eruption at the bottom of sea, it has a character of syngenetic sedimentary deposit, which was affected by the late hydrothermal superimposed and light rebuilding after it came into being, which is typical sedex bedded - controlled deposit
通過對凡口礦床的成礦地質背景、礦物成分、稀土元素、同位素以及的黃鐵礦、閃鋅礦、方鉛礦標型特徵進行了分析總結，確定了凡口礦床是海底熱泉噴溢形成的，同時又受到後期熱液輕微疊加改造，屬于典型的sedex型層控礦床。And the dopping magneto - optical materials were constructed to better meet the demand for the properties of magneto - optical disk recording media materials, forming the series magneto - optical recording media materials and decreasing the making cost by the method of introducing the light and middling rare - earth into the tbfeco materials. the magneto - optical properties and compositions of the tb - fe - co series dopping magnetic - optical film materials were investigated. the results show that when small amount of adulteration element was introduced into the tb - fe - co, the magneto - optical properties of materials are increased. for example the kerr angle and the coercive force are both improved
對輕、中稀土摻雜的tb - fe - co系列磁光薄膜材料進行丁磁光性能和成分的測試，結果表明：在摻雜元素含量較小時，摻雜后的tb - fe - co磁光材料具有較好的磁光性能， kerr轉角_ k和矯頑力hc都有所改善，摻雜元素的含量應嚴格控制，不能超過一定限度，一般一般摻入量應莊10at左右。The ministry of finance and the state administration of taxation jointly determined to adjust export refund rates of the following products as of 1 may 2005 : ( 1 ) export refund rates of coal, tungsten, tin, antimony and their products decreased to 8 % ; ( 2 ) abolishing of the export refund tax of thulium, thulium oxide, salts of lanthanum, silicon metal, molybdenum ores and its fine ores etc
中國財政部、國家稅務總局決定自2005年5月1日起調整下列產品的出口退稅率： （ 1 ）將煤炭，鎢、錫、鋅、銻及其製品的出口退稅率下調為8 % ； （ 2 ）取消稀土金屬、稀土氧化物、稀土鹽類，金屬硅，鉬礦砂及其精礦，輕重燒鎂，氟石、滑石、碳化硅，木粒、木粉、木片的出口退稅政策。分享友人