查询词典 rare earth

In this paper,through the adding of minute rare earth oxides La2O3 and CeO2 in the electrode covering,we study their effects on high temperature oxidation and corrosion resistance of the weld metal in the air and sulphureous gas.

本文通过在焊条药皮中分别添加微量稀土氧化物La2O3及CeO2，研究其对焊条熔敷金属在空气中和含硫气氛中抗高温氧化及腐蚀性能的影响。

The region has intensified the development of rare earth, sylvite, phosphorous , nonferrous metals and other advantageous resources, as well as the construction of energy ore production bases and backbone enterprises

稀土、钾盐、磷矿、有色金属等优势资源的开发力度加大，能源矿产基地及骨干企业的建设进一步加强。到中国译典经典版本中查找关于phosphorous的最新解释和例句。。。。

Research on preparation and luminescence of rare earth doped tellurite and phosphate glassy laser materials is authors mainly researched topics. In addition, the author has also studied for the application about the two kinds of materials.

作者硕士期间所作工作主要是掺稀土亚碲酸盐和磷酸盐玻璃激光材料的制备和发光的研究，在这基础上对它们的应用也作了相应探讨。

We hope to put forward our research to machining method, drawing process and reducing the loss of the tellurite glass fiber. A test total solution of rare earth doped tellurite fiber is in need of the research.

最后，作者认为需要进一步研究掺杂稀土的碲酸盐玻璃光纤的测试方法和光纤放大系统的测试方法，形成一个完整的研究体系。

Compared to the some other reported glasses, it is indicated that the tellurite glass prepared in this paper has a better rare-earth Er3+ ions solubility and a lower energy transfer rate of cooperative upconversion, and is a beneficial glass host applied for broadband fiber amplifiers.

与报道的一些其它玻璃相比，本文研制的碲酸盐玻璃具有较好的稀土Er3+离子溶解性、较小的协作上转换能量转移速率，是一种比较理想的用于宽带放大的掺铒玻璃基质。

So these tellurite glasses may be good candidates for broadband optical window material.Different concentration rare earth ions doped different kinds of tellurite glasses have been done in our experiment.

透过光谱的结果表明这两个体系玻璃的光透过率较高，而且紫外吸收截止边较短，具有宽的透过窗口。

A series of binary and ternary rare-earth compounds were synthesized by the reaction of terbium ion with p-aminohippuric acid and phenanthroline or 2,2'-bipyridine(2,2'-bpy) in the ethanol solution.

在乙醇溶液中以邻菲咯啉、 2，2'-联吡啶和对氨基马尿酸为配体与铽离子Tb(Ⅲ合成了二元和三元稀土配合物。

The height of terminal buds, leave area and induction of adventitious roots of Ginkgo biloba were studied by adding of different concentration rare earth [La(NO3)3] in mediums of MS0 and 1/2 MS+0.5 mg/L IBA.

以银杏成熟胚诱导的无菌苗茎段为外植体，探討稀土[La(NO3)3]对其茎段顶芽高度、叶面积及芽苗不定根发生的影响。

By means of the Miedema formation energy model for binary system with the Tanaka modification by excess entropy and the Chou geometric model for ternary system, the interaction relation between rare earth element La and the constituent elements of Sn Pb alloy system was analyzed.

传统的Sn60 Pb4 0软钎料合金中添加微量稀土元素La( 0 0 2 4 %)，显著抑制了其显微组织中围绕先析出富Pb相的粗大的富Sn相晕圈的形成，实现了金属学组织的均匀化，并进而提高软钎料合金的高温拉伸强度 70 % [1] 。

The basalt is belong island arc tholeiite and series of the calc-alkaline,and have character of island arc in rare earth element and trace element.

玄武岩属岛弧拉斑玄武岩和钙碱性系列，属太平洋型钠质类型，稀土、微量元素显示具岛弧特征，大地构造位置为岛弧中心靠近大洋一侧，与南侧那拉提晚泥盆—早石炭世侵入岩共同组成火山弧，同为古亚洲洋向北俯冲的产物。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。