例句與用法

1. 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。
2. properties of light rare earth substituted dyfeco magneto-optical recording film
   磁光記錄膜的制備及其特性研究
3. 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
4. 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(xiàn)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(tài)向微晶和多晶態(tài)轉變；鍍層的顯微硬度與耐磨性提高，力學性能優(yōu)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。
5. 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(guī)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?yōu)榇笱罄咝鋷r漿侵位特點。