稀有金屬礦物 的英文怎麼說

中文拼音 [yǒujīnzhǔkuàng]
稀有金屬礦物 英文
mineral of rare metals
  • : 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...
  • : 有副詞[書面語] (表示整數之外再加零數): 30 有 5 thirty-five; 10 有 5年 fifteen years
  • : Ⅰ名詞1 (金屬) metals 2 (錢) money 3 (古時金屬制的打擊樂器) ancient metal percussion instrum...
  • : 屬名詞1 (類別) category 2 [生物學] (生物分類系統上所用的等級之一) genus 3 (家屬; 親屬) fami...
  • : 名詞1. (礦床) ore [mineral] deposit 2. (礦石) ore 3. (開采礦物的場所) mine
  • : 名詞1 (東西) thing; matter; object 2 (指自己以外的人或與己相對的環境) other people; the outsi...
  • 稀有 : rare; unusual; uncommon稀有貴金屬 rare precious metals; 稀有貨幣 scarce currency; 稀有氣體 rare g...
  • 金屬 : metal
  • 礦物 : mineral
  1. 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,人們發現在鈣鈦錳氧化ln _ ( 1 - x ) axmno _ 3 ( ln為la , nd , pr等元素; a為ca , sr , ba等堿土元素)中具磁電阻( magnetoresistance )效應,由於它在磁記錄,磁傳感器方面具廣泛的應用前景,同時也向傳統的磁記錄材料提出了挑戰,因而引起了理學界的廣泛關注。
  2. Main research contents and achievements of this thesis is as follows : l. this paper carries through particular test and analysis to the basic physical - chemical properties of gaojiawang palygorskite, an environmental mineral fibre, by xay, ir, tem, sem etc. this paper has also discoursed upon the development appliance research status in quo and directions of palygorskite. 2. according to the preceding surface modification research achievements to nonmetal mineral materials, the author combines the self characteristics of palygorskite such as the ratio of length and diameter, typical nano - rank particle diameter, big ratio surface area, well - developed crystal growth imperfection and lattice defect etc. the author also designs organising modification ortho - experimentation of palygorskite by adopting iso - propyl alcohol as thinner of wd - 51 and ndz - 401, and acquires the best craft parameters and craft conditions for gaojiawang palygorskite original ore organising modification, namely : wd - 51 concentration 1. 6 % ( wt % ), modification temperature 120 ?, and modification time 60 mins ; ndz - 401 concentration 2. 0 % ( wt % ), c modification temperature 120, modification time 80 mins

    在前人對非材料表面改性的基礎上,結合環境纖維?坡縷石自身的特點(如:長徑比、典型的納米粒徑、大比表面積、發育的晶體生長缺陷和晶格缺陷等) ,通過對坡縷石機化改性設計正交試驗,採用( ch _ 3 ) _ 2choh作為釋劑,獲得了採用wd - 51和ndz - 401對高家窪坡縷石原進行機化改性的最佳工藝參數和工藝條件,分別為: wd - 51的濃度為1 . 6 ( wt ) ,改性溫度為120 ,改性時間為60min ; ndz - 401的濃度為2 . 0 ( wt ) ,改性溫度為120 ,改性時間為80min 。
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