查询词典 bell metal

In this paper , the molecular structure , characteristic of molecular spectra , methods for preparation and the applicable areas of metal phthalocynine and metal free phthalocyanine were commented .

本文首先对酞菁配合物的结构、性质、制备方法和应用做了介绍，并回顾了近年来蛋白质探针的研究进展及蛋白质分析的一些重要方法。

But when exposed to hydrogen peroxide, an oxidant, the metal phthalocyanine films behave differently depending on the type of metal used.

但是当接触到氧化剂过氧化氢时，金属酞菁薄膜的不同反应则取决与所用金属的种类。

Our company main products are: flexible organ-style guard rail; stainless steel, cold plate rail shield; Drum screw shields; adjustable plastic pipe is cold, metal cooling pipe; engineering towline; steel trailer chain; rectangular metal hose; catheter shield; operating items; plastic hoses, hose connectors and production stamping Auto Accessories.

本公司主要产品有：柔性风琴式导轨防护罩；不锈钢、冷板导轨防护罩；圆筒式丝杠护罩；可调塑料泠却管、金属冷却管；工程塑料拖链；钢制拖链；矩形金属软管；导管防护罩；操作件；塑料软管、软管接头及生产汽摩冲压配件。

The company's main products are red gold, gold, platinum, antique copper-gold, black money and imitation rust and other metal glaze and a variety of Cuicanduomu the Yaobianhuayou, metal glaze, Yaobianhuayou the artists will use the glaze out of the , Reminders of grain and care for the agent, glaze with the printing powder, ethylene glycol, Yin You and agents, such as fixed.

公司的主要产品有红金、黄金、白金、仿古铜金、黑金和仿铁锈等金属釉料以及各类璀璨夺目的窑变花釉，还有金属釉、窑变花釉等艺术釉必用的析金剂、催晶剂、护金剂、釉用印刷粉、乙二醇、印油及固定剂等等。

As a heavy metal precipitant to remove metal from waste water streams.

快速有效将多种重金属同时沉淀，去除废水中重金属。容易使用。

Barrel is the key part of artillery. In shot process, propellent gas of high pressure and high temperature flows in the tube at a high rate of speed, which brings an upheaval to the temperature field of the composite barrel. As to the composite barrel with metal inner, its poor thermal conductivity is more likely to cause uneven temperature distribution and bigger temperature gradient, to produce improper deformation and to make the work temperature of metal inner rise, all of which will affect the life span of barrel.

身管是火炮的关键部件，在火炮发射过程中，高温、高压的火药燃气在身管内成脉冲式高速流动，使身管受到急剧的加热，引起身管壁内的温度急剧变化，而对于带金属内衬复合材料身管，由于复合材料导热性能较差，更容易引起非均匀温度分布以及较大的温度梯度，产生不合适的变形，也会使身管的金属内衬的工作温度升高，从而使得身管的寿命降低，同时身管的发热会引起其刚度的变化，增大射弹散布。

And the mechanism of ATRP is discussed from the view of complex-catalytic reaction. It is deduced that the active center in ATRP is not pure radical but complex active center, which maybe a complex with radical and complex ion. The structure of active center may have a "bridge"structure formed through propaganating radical and transition metal ion, and the active center exists in a"cage"generated by ligand-transition metal ion-organic halide and monomer or solvent.

论文运用基团贡献理论对一些实验现象和结果进行了讨论和分析，并结合研究结果对络合催化引发原子转移自由基聚合反应的机理进行了初步的探讨，认为：过渡金属化合物与有机配体参与的络合催化引发原子转移自由基聚合反应中，聚合反应的活性中心不是纯粹的自由基活性中心，而是与过渡金属相结合的、有着某种"笼"结构存在的复合式活性中心，同时该活性中心以自由基特性为主，同时兼具某种程度的其它活性中心特征（如阳离子和络合聚合活性中心）。

Ten kinds of metal and three kinds of organic templates, including ethylenediamine, 1,4-butylenediamine and pyrazine were used in the synthesis of metal phosphonate coordination polymers.

在所合成的16种金属有机膦酸盐配位聚合物中，有机配体为2-羟基乙酰基膦酸，用于配位的金属离子共10种，模板剂3种分别为乙二胺(en，1，4-丁二胺，哌嗪。

Jamesonite, marmatite, pyrrhotite and pyrite are the complicated and mutiple-metal sulfide resources to process difficultly in Dachang Mine. Research on the basic theory of flotation electrochemistry and on potential-controlled flotation technology of the sulfide resources can be helpful to develop some new flotation theory and technology of the complicated and mutiple-metal sulfides, and to utilizate comprehensively the mineral resources, and to lower their production cost, and to improve the economical benefits. It is of important theoretical and practical significance.

脆硫锑铅矿、铁闪锌矿、磁黄铁矿、黄铁矿是大厂特有的难分离、难处理的复杂多金属硫化矿物资源，对其进行浮选电化学的基础理论和电位调控浮选技术研究，可发展复杂多金属硫化矿物浮选分离理论，形成复杂多金属硫化矿物浮选分离的创新技术，加强矿产资源的综合利用，降低成本，提高经济效益，具有重要理论意义和现实意义。

The challenge was to confine electrons tightly in a 'quantum wire' and bring this wire close enough to an ordinary metal so that the electrons in that metal could 'jump' by quantum tunneling into the wire.

所面临的挑战是在一个'量子线'里紧紧地控制住电子，把这根电线接近普通金属这样一来就可以使金属中的电子以"跳跃"的方式使量子穿梭于电线间。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。