查询词典 samarium

First derivative spectrophotometric method for determining of micro samarium in electroplating solution is given,using xylenol orange as color reagent.

提出了利用二甲酚橙为显色剂测定电镀液中微量钞的一阶导数分光光度法。

The Applications of Samarium Diiodide and Ytterbium Trifluoromethethanesulfonate in Organic Synthesis, the Applications of Bis Carbonate in Sythesis of Chloroformates

论文标题：二磺化钐及三氟甲磺酸镱在有机合成中的应用，双碳酸酯在氯甲酸酯合成中的应用

One is focused on the ytterbium metal, allylytterbium bromide, ytterbium diiodide and samarium diiodide promoted organic reactions and their applications in organic synthesis.

金属镱，二碘化镱和二碘化钐促进的有机反应及其在有机合成中的应用；2。

In conclusion, the influence of the flow condition to the magnetism performance,and emphases of the injection flow condition to the aeolotropism samarium cobaltmagnet were studied in the paper.

研究了注射成型工艺条件对磁性能的影响，重点研究了注射工艺条件对各向异性钐钴磁体的影响。

In chapter one, at first, we simply outlined some reactions promoted by samarium diiodide in recent years.

第一章，首先我们综述了近几年来二碘化钐促进的有机反应在有机合成中的应用。

The first one is focused on the samarium diiodide promoted organic reactions and their applications in organic synthesis.

二碘化钐促进的有机反应在有机合成中的应用；2。

The first one is focused on the samarium diiodide promoted organic reactions and their applications in organic synthesis.

第一章，首先我们综述了近几年来二碘化钐促进的有机反应在有机合成中的应用。

Ytterbium metal, ytterbium diiodide, samarium diiodide promoted organic reaction and their applications in organic synthesis;;bis carbonate in organic synthesis

中文题名金属镱，二碘化镱和二碘化钐促进的有机反应在有机合成中的应用；双碳酸酯在有机合成中的应用

Nitroarenes can be reduced by samarium diiodide to afford a nitrogen anion,which is a living species and can be acylated by relatively weaker acylating ester agents.

二碘化钐(SmI2)在四氢呋喃溶剂中还原硝基化合物，可以生成氮负离子中间体，该中间体具有较高的反应活性。

We succeeded in synthesizing two different segments: C〓-C〓 and C〓-C〓, employing Sharpless dihydroxylation reaction, Julia coupling and samarium diiodide mediated reaction as the key steps.

我们从单保护的1，3-丙二醇出发，以Sharpless不对称双羟化反应，Julia偶联反应以及SmI〓参与的反应为关键步骤，经过艰苦的多条合成路线的尝试与探索，成功的得到了Phorboxazole A B的两个不同的边链部分C〓-C〓和C〓-C〓。

To 30 years, research results of geomagnetic storms are embodied in the theory of magnetic storms Chapman Ferraro, they put forward to the magnetic field by the sun streaming compressed particle hypothesis was later confirmed by observation.

到30年代，磁暴研究成果集中体现在查普曼·费拉罗磁暴理论中，他们提出地磁场被太阳粒子流压缩的假说，被后来观测所证实。

According to ethical relativism, right and wrong are determined by the ethics of some relevant group.

依照伦理的相对论，权利和错误的被一些有关的团体的道德规范决定。