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Also, it is heavily used for separating tin and tungsten ores. Besides, jigging method is introduced to handle gold,,tantalum, columbium, titanium, zirconium and chrome bearing primary ores and to separate placer with desirable results achieved.

对于金属矿石,是处理粗、中、细粒铁矿、锰矿的主要方法之一,并大量用于选别锡、钨矿石;跳汰法在处理含金,钽铌、钛、锆、铬的原生矿石和砂石的选别亦能获得良好效果。

The Xray diffraction analysis of the compounds (3) and (4) shows the presence of an intramolecular coordination of oxygen to the tin atom giving rise to a fivemembered ring in which the metal exhibits a distorted trigonal bipyramidal geometry.

并通过X-射线衍射测定了(3)和(4)的晶体结构,其空间群均为P2〓/c,晶胞内分子数Z=4,分子结构是以锡原子为中心金属原子、含分子内O→Sn配位键五员环的扭曲三角双锥结构,碳碳双键的两个氢是顺式构型。

As present,lead salt,metal soap and organotin are widely used as heat stabilizers.

本课题的目的就是通过分子设计,合成一系列含马来酸二烷基锡组分高分子化合物,从而期望获得一类综合性能优异的聚合型稳定剂。

Generally the catalysts have high activity and good selectivity. At present the coupling reactions of organoborahes with terminal olefins s acid chlorides and aryl halides play an important synthetic approaches in organoborane chemical. The catalysts can be used by many kinds of organometal compounds such as: irons cobalt nickel ruthenium rhodium palladiums titaniums zirconiums tins indium and lithium organic compounds; The achievement has been amazed in preparing of unsaturated or saturated compounds and in synthesizing of natural products bioactive molecules and chiral compounds.

目前,卤代烃与不饱和烃的偶联反应和有机硼试剂与酰卤和卤代烃的偶联反应已成为有机合成的研究热点,此类反应可用铁、钴、镍、钌、铑、钛、锆、锡、铟、锂等多种有机金属化合物来催化,用于形成含饱和或不饱和C-C键的化合物,并已在天然产物、液晶、具有生理活性物质和手性化合物的合成中应用。

A binary lithium-storage composite anode material containing nano-sized silicon and tin particles was synthesized by an in-situ mechanochemical reaction using silicon monoxide, tin monoxide as oxidants and lithium metal as reductant.

通过调节球磨参数并加入适量助磨剂有效抑制因金属锂熔化导致的物料结块现象,得到将纳米硅、锡颗粒均匀分散在含锂化合物基体中的二元储锂母体复合材料。

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They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性,但我大喊,并在他们的方向扔石头让他们过的线索,远离我,以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。

Store this product in a sealed, lightproof, dry and cool place.

密封,遮光,置阴凉干燥处。