rare-earth element 中文意思是什麼

rare-earth element 解釋
稀土元素
  • rare : adj 1 稀少的；（空氣等）稀薄的；（群島、星等）稀疏的。2 稀有的，珍奇的；極好的，珍貴的。3 〈口語...
  • earth : n 1 〈常E 〉 地球。2 大地，陸地，地面，地上。3 土壤，土。4 【化學】土類；泥。5 世界人類；人的軀體...
  • element : n 1 要素；成分；（構成）部分；分子。2 【化學】元素；【數學】元，素；【機械工程】單元；單體；【無...
  1. 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。
  2. But variant rare earth element has different affections on the baths. the subjoining of rare earth enhanced the deposition rate and stability of baths. the cohesion of the matrix and the film and the surface quality are also improved

    但不同稀土元素對鍍覆工藝的影響不盡相同， re添加到鍍液中明顯提高了鍍液的沉積速率、穩定性、鍍層與基體的結合力和表面質量。
  3. Rare earth element ; cyanobacterium ; physiological effects ; bioaccumulation

    稀土元素藍藻生理影響富集作用
  4. 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。
  5. Experiments of the influence of rare earth element lanthanum on the growth, chlorophyll a and oxygen production of cyanobacterium

    的生理影響和滿江紅魚腥藻對鑭的富集作用進行了研究。
  6. The contents of rare - earth element in coals are correlative to the contents of the ash of these coals, with a few of coal samples showing exceptional high contents of rare - earth element due to the presence of the heavy mineral assemblages

    煤的稀土元素質量分數與灰分質量分數呈正相關關系，部分煤樣品由於有富稀土元素的重礦物組合的存在而出現稀土元素的異常高值。
  7. By study dabaoshan deposit on minerogenetic and geological background, mineral constituent, rare - earth element, isotope and typomorphic feature of sulpurization mineral, finally, we made a conclusion that dabaoshan deposit resulted from the volcanic deposition which type is laterebuilt and magma hydrothermal superimposed. we found the upside of dabaoshan deposit have been denuded or oxidized, bassically, it have reached the lowest part of the deposit

    通過對大寶山礦床的成礦地質背景、礦物成分、稀土元素組成、同位素以及黃鐵礦、閃鋅礦、方鉛礦的標型特徵進行研究，確定了大寶山礦床的成因為火山沉積，經後期巖漿熱液疊加型礦床，對礦床的遠景進行了預測，提出大寶山礦床的上部礦體已被剝蝕或被氧化，基本上已經到礦體的深部的觀點。
  8. Effects of rare earth element on the erosion - resistance of nickel - base spraying layers

    氟化稀土對鎳基噴焊層耐蝕性能的影響
  9. Influence of buffer gas in the hcd lamp upon the line strength of the rare - earth element

    燈中的載氣對稀土元素譜線強度的影響
  10. According to the comparison and analysis of mineral composition and geochemical characteristics of trace element, sulfur isotope, hydrogen and oxygen isotope, lead isotope and rare earth element in the gold ore and the altered spilite from the deposits of huachanggou gold mine, it was confirmed that the gold ore had obvious succession of the basic igneous rock

    摘要通過對鏵廠溝金礦床金礦石和蝕變細碧巖礦物組成、微量元素、硫同位素、氫氧同位素、鉛同位素及稀土元素地球化學特徵地對比分析，得出金礦石對該基性火山巖存在明顯的繼承性。
  11. The rare earth element ' s influence on the solidification of al - si alloy

    稀土元素對鋁硅合金凝固的影響
  12. Distribution patterns of the rare - earth element in coal are similar for the coals from the same district, and different for the coals of different districts

    同一礦區晚二疊世煤的稀土元素配分模式具有一定的相似性，而不同地區晚二疊世煤的稀土元素配分模式則差異較大。
  13. Soil erosion and nutrient losses in jiangjiatang watershed in lanxi city in zhejiang province during exploitation was studied from 1993 - 2000 using adoptive research methods such as runoff plot, catchment area, and rare earth element tracer ( eu ), and the soil fertility index appraisal. the major conclusions are as follow : 1. the principle of water and soil losses together with nutrients and the forms in which they were lost were studied under different fanning systems in runoff plot

    本研究選擇浙江省中部金衢盆地邊緣蘭溪市水土保持監督站蔣家塘小流域為研究試驗點，以協作單位蘭溪市水土保持監督站小流域開發試驗區為基礎，採用坡面徑流小區法、單源匯水試驗區出口實測法、穩定性核素- eu土芯示蹤法研究了2000年坡耕地不同農作措施水土流失規律及養分流失規律和小流域綜合開發過程中水土流失規律及養分流失規律，並對小流域侵蝕土壤的肥力現狀進行評價。
  14. According to the sample prepared by hydrothermal method, the doping cations can enter the spinel lattice. rare earth cations mostly occupy position b because of their big radius. cerium are oxidized to ce4 +, whose radius is relatively small, and ce4 + mostly occupies position a. as a whole, the coercivity of cobalt ferrite doped with rare earth element is bigger than that of pure cobalt ferrite

    結果表明，對水熱法制備的鐵氧體粒子，雜質離子能夠進入其尖晶石晶格中，並因稀土離子的半徑較大，而絕大部分佔據尖晶石的b位，鈰元素因被氧化成為四價離子，離子半徑相對較小，而主要佔據a位。
  15. 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。
  16. The rare earth element ' s accession brings the remarkble improve to the luminescence material that seems a bout of overturn relative to the traditional luminescence material. thus, the rare earth luminescence material became the study focus more and more

    稀土元素的引入使得發光材料的各項指標都顯著提高，相對于傳統發光材料來說猶如一場革命，因此，稀土發光材料越來越成為人們研究的焦點。
  17. Quantitative analysis of rare earth element oxides by electron probe microanalysis

    稀土氧化物的電子探針定量分析方法
  18. Microelements and rare - earth element in the calophyllum membranaceurn gardn leaves were determined by element plasma mass spectrometer. totally, the content of 47 kinds of elements were measured by icp - ms

    摘要利用元素等離子體質譜儀（ icp - ms ）測定薄葉紅厚殼葉中的微量和稀土元素，共測定了47種元素的含量。
  19. The sediment - environment, the mineral assemblages, and influence of marine are the main geologic factors of the contents and distribution patterns of rare - earth element in the coals

    煤的沉積環境、煤中無機礦物的組成以及海水的影響是控制煤的稀土元素質量分數及其配分模式的主要地質因素。
  20. By study hongyan deposit on minerogenetic and geological background, mineral constituent, rock alteration, rare - earth element, isotope and typomorphic feature of sulpurization mineral, we made a conclusion that the feature of haongyan is deposition - rebuilding desposit

    通過對紅巖礦床的成礦地質背景、礦物成分、圍巖蝕變、稀土元素組成、同位素以及硫化物的標型特徵進行研究，確定了紅巖礦床的成因為沉積?改造型礦床。
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