查询词典 rare earth element

She assumptions Road: Emilio segre should have found the first transuranic element neptunium, if he is not a lack of adequate knowledge of chemical and rare earth elements to make mistakes to 23,993 words; Similarly, Enrico Fermi should have been found in fission, if his team The chemical separation technology is not quite so appropriate.

她假设道：Emilio segre本应当发现第一个超铀元素镎，如果他不是缺少足够的化学知识而把23993错认作稀土元素的话；与此相似，Enrico Fermi本应该发现裂变，如果他的研究小组的化学分离技术不是这样不甚适当的话。

According to literature methods, the benzoic acid nitrogen mustard and its rare earth complexes were prepared. The structures were characterized by element analyses, IR, UV-vis and EPR spectra.

参照文献方法合成了苯甲酸氮芥及其稀土配合物，并通过元素分析、红外、电子光谱及电子顺磁共振光谱对配合物进行了表征。

A soft silvery metallic element of the rare earth group having no ''.

一种软质的银色金属元素，稀土属，没有''。

In the process of mining, milling and steel and rare earth melting, thoron element was released to the accessible environment together with smoke, wastewater and disposed slag, leading to radioactive contamination to the environment.

在采矿、选矿、钢铁和稀土冶炼等生产中，钍元素随烟尘、废水和废渣排放至环境中，造成放射性污染。

A white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite.

一种白色三价金属元素，有时归为稀土属，见于斯堪的纳维亚钪钇石中。

Trivalent metallic element of the rare earth group.

稀土属的三价金属元素，一种可延展的银白色铁磁体。

A trivalent metallic element of the rare earth group; usually occurs in association with yttrium.

一种稀土属的三价金属元素，通常与钇共生。

A soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process.

一种软质的黄白色三价金属元素，稀土属，能通过离子交换过程从氟碳锑矿或独居石中重新获

The mineralogy, petrology, rare earth and trace element geochemistry, Re-Os and Sr-Nd isotopic geochemistry of the black shales and cherts of Yuretusi Formation at the bottom of the Cambrian in Xiaoerbulake and Shugeitebulake sections from northern Tarim Basin have been systematically studied. It was discovered that the high enrichment of some deep source metal elements in the black shales deals with the activity of hydrothermal fluid from the lower crust or upper mantal.

本项目对塔里木盆地北部肖尔布拉克和苏盖特布拉克两剖面下寒武统底部玉尔吐斯组富有机质黑色页岩和硅质岩的矿物学、岩石学、微量元素、稀土元素、Re-Os和Sr-Nd同位素地球化学进行了系统研究，发现该黑色页岩中部分深源金属元素的高度富集与来自盆地下部上地幔或下地壳的深部物源的热水流体作用有关。

The influence of the oxygen balance of pyrotechnical combustion agent and the structure of its rare earth metal shell on the burning performance of the combined combustion element were studied.

分析了烟火燃烧剂的氧平衡及稀土壳体的结构对复合燃烧元件燃烧性能的影响，提供了复合燃烧元件的各项物化性能数据。

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。