查询词典 rare earth

This paper studied the effect of different individual rare earth elements and compounds on growth and development of pigling ,middle pig and big pig.

本文探讨了不同单一稀土，不同稀土化合物对仔猪、中猪和育肥猪生长发育的影响。

In the synthesis process of ligands and their rare earth complexes, metal lithium is used to substitute for n-butyllithium, such as the synthesis of fluorenyl lithium, piperonal dimethyl acetal lithium, and bis (9-fluorenyl) silylene lithium.

合成配体和配合物的中间体均采用金属锂代替正丁基锂，如芴锂、溴代胡椒醛二甲基缩醛基锂盐、甲基苯基双芴基硅烷双锂盐的制备，方法简单，操作简便，副反应少，且锂盐的浓度和用量易于控制。

It is supposed that rare earth elements affect plant physiology by regulating the Ca2+ level in plant cell.

Eu3+对植物体的作用方式可能是通过调节细胞内Ca2+变化来实现的。

In complex 1,Cucan be described as a four-coordinated square planar geometry.Compound 8 is the sodium salt of plumbagin and exists as ionic compound.Compounds 9-16 are the rare earth complexes of plumbagin with La,Y,Dy,Sm,Gd,Nd,Erand Eu.Compound 17 is binuclear Y complex.18 is mononuclear Ycomplex with plumbagin and another ligand from Plumbago Zeylanica.Compounds 19-21 are the ternary complexes with plumbagin and 2,2\'-bpy and phen as assistant ligand.In 19, the geometry of Cucan be described as five-coordinated distorted square pyramid that exists in a dimer through the weak bonding,and 1-D chain structure is formed by intermolecular hydrogen bonds.

化合物1的单晶结构分析表明1具有四配位平面四边形结构，化合物8是白花丹素的Na盐，以离子化合物形式存在；化合物9～16为白花丹素的La，Y，Dy，Sm，Gd，Nd，Er，Eu的稀土金属配合物；化合物17是白花丹素的双核钇结构；化合物18为白花丹素的单核钇结构，该配合物除了含白花丹素外，还有来自白花丹植物中的另一个单体化合物也参与配位；化合物19～21是以2，2\'-联吡啶和邻菲咯啉等含N配体为辅助配体，具有白花丹素—含N配体—金属离子的三元配合物，化合物19是白花丹素和2，2\'-联吡啶与Cu的配合物，具有五配位的四方锥构型，通过Cu…O弱的成键作用形成二聚体，再通过分子间的氢键作用进一步形成一维链状结构，化合物20和化合物21是白花丹素分别与2，2\'-联吡啶和邻菲咯啉的Zn配合物，都具有六配位八面体构型的双核锌配合物，呈一维链状结构，化合物20中链与链之间的大量氢键将一维链扩展成二维层，分子间的π-π堆积作用进一步形成三维结构。

The application of rare earth in the dyeing of fine-denier polyamide fiber with acid dyes was studied.

本文研究了稀土在细旦锦纶酸性染料染色中的应用。

The coordination polyhedron is the first reported example for rare earth glycine (1 : 3) complexes.

该配位多面体是摩尔比为1 ： 3的稀土甘氨酸配合物中报道的第1个例子。

Rare-earth mineral ; mixed-layer ; polytype ; high resolution electron microscopy

稀土矿物；混层；多型；高分辨电子显微术

Effects of rare earth doped on structure and electrochemical performance of positive electrode materials for lithium ion batteries are summarized.

作为一种新型的高效绿色电池，稀土掺杂材料在锂离子电池中得到了广泛的应用，从而成为稀土应用的重要应用领域之一。

Integrated research has been done on the fluorescent powder from rare earth, then a new type of blue fluorescent chlorophosphate powder was synthesized.

针对目前普遍使用的铝酸盐体系的稀土蓝色荧光粉在性能和工艺上的研究尚存的问题，对稀土蓝粉进行了综合技术研究，制备了一种稀土氯磷酸盐体系的蓝色荧光粉。

This method could also be applied to prepare praseodymium oxides, however, it was not successful in preparing other light rare earth oxides.

这种方法可以应用到制备氧化镨，但是，无法成功应用到制备其他轻稀土氧化物。

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。