查询词典 rare earth
- 与 rare earth 相关的网络例句 [注:此内容来源于网络,仅供参考]
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In the third chapter, eight new complexes of 4, 6-dimethylpyrimidine 2-thioacetic acid with rare earth metals has been synthesized and characterized by means of elemental analysis, molar conductivity, IR,〓 NMR and TG-DTA. The general formula of the complexes is Ln〓(n=4 or 5). In the complexes, the deprotonated ligand coordinated to the rare earth metal ions in chelate bidentate mode. 4 or 5 molecular of crystal water existed in the complexes.
第三章合成了八种4,6-二甲基嘧啶-2-硫代乙酸的稀土配合物,通过元素分析、摩尔电导、红外光谱、核磁共振氢谱和热重-差热对配合物进行了表征,研究结果表明,配合物的组成为Ln〓n=4或5),在配合物中配体羧基脱去质子后采用螯合双齿的方式与稀土离子形成配位键,同时,配合物中含有4或5个结晶水。
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In order to investigate therelationship between macrocyclic ligands and rare earth ions, wehave synthesized two new Schiff-base crown ether, two newdiaza-crown ether ligands and their rare earth complexes in thisdissertation. These complexes have been characterized byelemental analyses, IR spectra,〓 NMR spectra, thermalanalyses and molar conductivity measurement, we investigatedtheir ability to form coordination compounds and theircompositions and properties.
为了进一步研究和探讨冠醚配体对稀土元素的配位作用,论文首次报道了两个新希夫碱冠醚、两个新双氮杂冠醚及它们的稀土配合物的合成,并通过元素分析、热分析、核磁共振氢谱、红外光谱及摩尔电导测定,研究了配合物的组成及性质。
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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.
金平白马寨铜镍硫化矿床杂岩体分带明显、属亚碱性铁质-超铁质岩、具Ni-Cu-Co三元素先熔离,后富集的规律、稀土配分为右倾斜轻稀土富集型,但橄榄岩铕亏损显著,Gd-Tb微小负异常,显示成矿物质来源地幔,与地壳物质无混染和大陆拉斑玄武岩浆上涌后变为大洋拉斑玄武岩浆侵位特点。
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The TiO2/zeolite doped with each of rare earth ions La3+,Nd3+,Yb3+ was prepared from tetrabutyl titanate and rare earth oxide by solgel process.
以钛酸丁酯和稀土氧化物为原料,采用溶胶凝胶法制备了镧、钕和镱稀土离子掺杂TiO2/沸石光催化剂。
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The company to tap the world's most abundant reserves of rare earth resources in the Bayan Obo rare earth as its main business,have aunique resource advantages.
公司以开发利用世界上稀土储量最丰富的白云鄂博稀土资源为主要业务,领有得天独厚的资源优势。
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It has synthesized liquid-amorphism nanometer organic rare-earth metal compounds insol-gel method, which is different from solid-crystal rare earth catalyst.
2用溶胶-凝胶法制备了液态-无晶形的纳米有机稀土金属复合物,与常见固态-晶形稀土催化剂有根本性区别。
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Based on the investigation of a large amount of the related academic literatures at home and abroad, a series of new heat-resistant magnesium alloys have been investigated based on AE41 alloy by Ca and Si alloying as well as substituting LPC mixed rare-earth metal for Di mixed rare-earth metal in this paper.
在阅读分析国内外相关技术文献的基础上,本文以AE41合金为基础,通过Ca、Si元素的微合金化以及用无钕的LPC稀土替代稀土Di,以获得常温力学性能相当于和150℃~175℃耐热性能优于AE42的廉价镁合金。
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We also obtained rare-earth ions and transition metal ions doped 〓 in the hydrothermal system and found there exist a reductive atmosphere which can reduce the rare-earth ions.
结果发现,在水热体系中存在一种还原气氛,稀土离子可以被还原为低价态,存在变价的过渡金属离子锰离子在产物中还是保持原来的低价态。
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The catalyst is composed of at least one transition metal or transition metal alloy supported on the rare-earth metal oxide, the content of each component: transition metal or transition metal alloy 0.1-99%, and rare-earth metal oxide
催化剂由至少一种过渡金属或过渡金属合金担载在稀土金属氧化物上组成,各组分含量为过渡金属或过渡金属合金0.1~90.0%,稀土金属氧化物10.0~99.9%。
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Due to the electron composition and 4f electron motion property of rare-earth metalelements, rare-earth metal complexes possess such a lot of excellent electronic,chemical and optical properties that they become major research object of new andhigh technology material.
中文摘要由于稀土金属元素的电子组成和4f电子运动特性,使得稀土金属化合物拥有许多优异的电子、化学和光学特性,从而成为高新技术材料的研究对象。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。