金属

The main component of the celestial globe is a hollow bronze globe, with crisscross grids on the spherical surface, which are used to delineate the exact position of celestial bodies.

整个铜球可以绕一根金属轴转动，转动一周代表一个昼夜，球面与金属轴相交于两点：北天极和南天极。两个极点的指尖，固定在一个南北正立着的大圆环上，大圆环垂直地嵌入水平大圈的两个缺口内，下面四根雕有龙头的立柱支撑着水平大圈，托着整个天体仪。

And then the functionalized carbon nanotube, partial platinum salt and all transition metal M salt are stirred and reflow for certain time, added with rest platinum salt to continue to reflow, cooled, washed centrifugally, dried and carried out heating treatment in a hydrogen atmosphere, thus obtaining the anchoring platinum catalyst of the transition metal on the carbon nanotube.

然后将功能化的碳纳米管与部分铂盐和全部过渡金属M盐在多元醇溶剂中搅拌回流一定时间后，加入剩余的铂盐继续回流，冷却，离心洗涤，烘干，最后在氢气气氛中热处理，得到碳纳米管上过渡金属锚定铂催化剂。

In the early centuries of our era, however, there gradually developed a mysticism among chemical writers due to Egyptian and Chaldean religious magical ideas, and there developed a fanciful relation of the metals as such to the sun and the planets, and as a consequence there arose the belief that it was necessary to confine the number of metals to seven.

然而在我们时代早期的几世纪里，由于埃及人和占星术宗教人士神秘的想法，在化学作家之间逐渐产生了神秘主义，而产生金属的想象的联系，例如向着太阳和行星，而结果就引发了信仰，认为限制金属的数量为七是必要的。

Secondly, in the experiment, the characteristic of flux and spray cone of the nozzle is measured and analyzed. Two different kinds of packing, metal and plastic, is applied to evaluate the performance of the saturator. After comparison between the two, it can conclude that metal packing is better than plastic packing in all aspects, and more suitable for high pressure and temperature conditions.

其次，在实验中，测量和分析了喷嘴流量和雾化角的特性，应用金属和塑料两种填料对饱和器进行了实验研究，对比了两种不同填料的性能，发现金属填料比塑料填料具有更好的流体力学和传热传质性能，更适合于饱和器的压力和温度环境。

The models have been applied to an investigation on the chatter in a type Mx-4 lathe. An in-depth study has been made on the AR spectrum, the chatter modal damping ratio and the characteristic root of a time-varying system.

文中对时变金属切削过程颤振的AR谱特性、颤振模态的阻尼率、时变系统的特征根这三个方面都进行了深入的研究，指出了时变金属切削过程颤振的特点，提出了颤振状态下的机床切削系统仍然是稳定系统的观点。

Reductive dechlorination of chlorinated Endocrine Disrupting Chemicals in Water by metallic catalytic reduction was studied for further understanding the application of palladiumized iron-scrap bimetallic catalytic reduction technology in treating high molecular weight and structure complicated refractory chlorinated organic pollutans, especially, the reductive dechlorination reaction of the three chlorinated EDCs: 2,4-dichlorophenoxyacetic acid(2,4-D), Hexachlorocyclohexane, and chlordane.

通过研究水体中有机氯类环境内分泌干扰物在金属催化还原体系中的还原脱氯反应，考察了铁屑镀钯双金属催化还原技术在处理水体中大分子量复杂结构的难降解氯代有机污染物的应用，着重研究了水体中2，4-二氯苯氧乙酸(2，4-D)、六六六和氯丹三种有机氯类环境内分泌干扰物在Pd/Fe催化还原体系中的还原脱氯行为。

Four series of metal bile acid complexes were synthesized, including transition metal cholate and deoxycholate complexes, rare earth cholate and deoxycholate complexes.

合成了四个系列的金属胆汁酸配合物，包括过渡金属胆酸及脱氧胆酸配合物，稀土元素胆酸及脱氧胆酸配合物。

Do not put the board under the naked flame, melted metal, metal sparkles or sun, and never cut or chop anything at the surface of the board.

请勿将此材料暴露于明火、熔融金属、金属火花或只设阳光下，也不能用作切剁的表面。

Heavy on the metal, easy on the eyes- Gun Metal, Rose Gold, and Yellow Gold chronograph styles.

重的金属，容易对眼睛，枪金属，玫瑰金，黄金和计时风格。

As well as activity was exhibited. Theaddition of cinchonidine led to a remarkable increase in the reaction rate, as confirmed bythe IR study that the modifier activates the carbonyl groups of the reactant through itsquinuclidine nitrogen. On the contrary,〓 exerted a strong inhibition effect on theenantioselective hydrogenation. Chapter 3 Finely dispersed polyvinylpyrrolidone-stabilized iridium andbimetallic clusters were prepared by the alcohol-water reduction method.

第三章 采用醇水还原的方法制备了聚乙烯基吡咯烷酮稳定的铱纳米簇及双金属纳米簇，对丙酮酸甲酯的催化氢化表明，在铱金属簇催化体系中，辛可尼定不仅诱导了一定的对映选择性，同时对反应活性有明显的促进作用，平均反应速率可提高2-6倍。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。