la fe 中文意思是什麼
la fe
解釋
拉非-
( 6 ) after working we pose two hypothesis of migrate : one is " firewall avoid hypothesis ", another is " habitat optimization hypothesis ". ( 7 ) fe have discovered phoenicurus crythrogaster, prunella fulvescen. < ;, carduelis horneianni * etberiza citrine ] la and seiccrcus castaniceps. they are all new distribution in heilongjiang province
（ 6 ）通過實驗數據和相關資料的總結，提出關于遷徙鳥類的兩個假說「屏障迴避假說」和「棲址優選假說」 （ 7 ）在2000 - 2002年的環志過程中，在西部的高峰鳥站獲得紅腹紅尾鴝（ phoenicuruservthrogaster ） 、褐巖鷚（ prunellafulvescens ） 、極北朱頂雀（ carduelishornemanni ） 、黃? （ emherizacitrinella ）和栗頭?鶯（ soicercuscastaniceps ）等5種黑龍江省鳥類新分佈種。 -
The investigation of catalytic activity of la - sr - fe - co perovskite - type - oxide
甲烷在鈣鈦礦型催化劑上脫硫脫氮的研究 -
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。 -
Magnetic properties, magntetocaloric effect and magnetic phase transition in nazn _ ( 13 ) - type compounds la ( fe, al ) _ ( 13 ) were investigated by introducing interstitial atoms and substituting other atoms for the rare earth
本論文通過添加間隙碳原子和對稀土位元素進行替代研究了la （ fe ， al ） _ （ 13 ）化合物的基本磁性、磁熱效應以及磁性相變。 -
As one of magnetism properties in the magnetism materials, magnetoresistance ( mr ) effect shows the magnitude about resistivity dependence of the magnetic field. the time when people focus on magnetoresistance effect is the last ten years. after mr effect was discovered from the multilayered films fe / co by baibich et al in 1988, helmolt et al got the same result from la _ ( 2 3 ) ba _ ( 1 3 ) mno _ x films
人們對磁電阻效應的研究主要在於最近的十年間，繼1988年baibich等人在磁性多層膜fe co中發現了磁電阻效應后， 1993年helmolt等人在la _ （ 2 3 ） ba _ （ 1 3 ） mno _ x等鑭錳氧化物薄膜材料中也發現了磁電阻效應。 -
The hexagonal barexfe, 2. xo, ( re denote la ^ nd > sm and gd ) ultrafine powders with m - type structure were firstly synthesized by a novel technique - - - - - - sol - gel combustion synthesis method which combines sol - gel method with low temperature combustion synthesis method. based on theoretical analysis and experimental study, the effects of the composition of the gel, the different kinds of intermediate, strength of solution, the amount of complexing agent, the different kinds of anions, the adding of dispersant, auto - propagating combustion and the condition in heat treatment of the gel on crystal phase, particle size, morphology and magnetic properties of bare ^ fe ^ o, ultrafine powders were firstly investigated systematically to clarify the optimum forming conditions
本研究是在前人工作的基礎上，同時從制備方法和摻雜元素兩方面著手，以保證制備的粉體材料具有優異的性能，即首次利用溶膠?凝膠濕化學合成法和低溫燃燒合成法相結合的一種兼具二者優點的超細粉末新型合成技術? ?溶膠-凝膠燃燒合成法來完成稀土元素摻雜鋇鐵氧體bare _ xfe _ （ 12 - x ） o _ （ 19 ） （ re為la 、 nd 、 sm 、 gd ）超細粉末的制備。
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