查询词典 copper

Conductance of copper graphite materials with different copper contents was studied in detail.

随着科技的飞速发展，电机性能不断提高，对电刷的要求也愈加苛刻。

The conductibility of graphite powder can be improved by plating copper on it, and its magnetic conductibility can also be improved by further plating nickel on the copper coating.

讨论了化学镀铜工艺条件，开发出一种导电导磁性能好、密度小和价格低的镀镍石墨粉类导电填料

For "T" type junctions, the copper can be given a turn around the constantan to keep it from melting back too rapidly from the arc area. Start with the constantan extended beyond the copper ring a short

对于"T"型热电偶的结球，铜能给康铜提供一个回转时间，防止它在电弧区域快速熔化，只要让康铜线比铜线长出一小段即可。

Copper-bottomed pots; a copper-bottomed ship.

底部包铜的壶；底部包铜的船。

Petrological,geochemical and Nd,Sr,Pb isotopic studies indicate that the ore-hosting volcanic rocks of Xiongcun supperlarge copper-gold deposit in the Gangdese copper belt, Tibet belong to dacite porphyry with ultro-shallow emplacement.

岩石学、地球化学和Nd、Sr、Pb同位素研究表明，西藏冈底斯铜矿带雄村特大型铜金矿床的容矿火山岩为一套具超浅成侵入特点的英安斑岩，SiO2含量集中在61.97%～64.31%之间，富Na2O、低K2O， Na2O/K2O比值平均为5.25。

Thereafter, the sequential process would involve a solid/liquid separation, reduced sulphuric acid leaching, counter current decantation, solvent extraction of the copper and cobalt and their electro-winning to produce high purity copper and cobalt cathode metal.

后续程序还包括固液分离，简化的硫酸过滤处理，逆流移注（这个词翻译可能不准，请自己调整），铜和钴的溶媒萃取和电解来生产/还原出高纯度的阴极金属铜和钴。

Copper should not blindly believe in fans, not fans of copper are not good, I still prefer the TT fans in Taiwan, and its structure is indeed unique to concave fan speed fan at the same impressive performance (at present only ADDA and Foxconn, and can be than up and down) and, more importantly, its structure solely on the basis of the needs of the design of heat, unlike a number of non-brand-name fans engage in demagogy is not some exaggerated shape that is the nature of work on thermal performance.

不要过分迷信铜风扇，不是铜风扇都不好，我还是比较喜欢台湾的TT风扇，其独特内凹风扇结构确实使其在同转速风扇中成绩骄人(目前只有富士康和ADDA和其可以一较上下)，更重要的是其结构完全根据散热需要而设计的，不象一些杂牌风扇搞一些夸张造型哗众取宠不在本质即散热效能上下工夫。

It indicates that the formation of NO dimer is favorable to the NO direct decomposition on the copper surface. The Mülliken population analysis shows that the average charge on Cu is 0.66 e, when the singlet state dimer interacts with the copper.

同时电荷布居分析表明，单重态的二聚体与铜作用时，铜原子上的平均电荷达到0.66e，说明在这种吸附形式中铜被离子化的倾向较大，而且这种吸附形式最有利於NO的分解。

It is very difficult to eliminate these influence factors completely by conventional treatment. Surface properties and surface treatment of ultrafine red phosphorus and MMT and their interface properties with polymer matrices were studied in this thesis. The results were characterized by GC, FTIR, XRD, DTA, TG, XPS, UV, SEM, TEM and other physical and chemical methods. The main contents are as following: 1. The study of factors influencing ultrafine red phosphorus's invariability and phosphine liberation indicated red phosphorus undergone oxidation and dismutation reaction in air, and trace ion of iron, copper and nickel fastened water absorption and oxidation, in which the effect of copper ion was the most, while aluminium and zinc ion could slow down red phosphorus'oxidation, and silver ion had the best effect on red phosphorus moisture absorption. Inhibitors such as aluminium hydroxide, magnesium hydroxide, organic phenol and ferrous potassuim cyanide had a good effect on reducing red phosphorus moisture absorption and restraining phosphine liberation.

本文围绕纳微米材料的表面处理及其在高聚物基体中的应用这一主题，系统地研究了超细红磷和蒙脱土两种常见材料的表面特性、表面处理方法及其与高聚物基体的界面特性，通过气相色谱、红外光谱、X射线衍射、差热、热重、X射线光电子能谱仪、紫外光谱、扫描电镜、透射电镜等现代分析仪器以及其它物理、化学方法对实验结果进行了表征和分析，全文主要内容如下： 1、对影响超细红磷安定性的因素以及磷化氢的缓释研究表明：红磷在空气中发生缓慢氧化、歧化反应，微量的铜、铁、镍等金属离子增加了它的吸水和氧化速度，其中铜离子的作用最为明显，而铝、锌等离子减慢了红磷的氧化速度，银离子对减少红磷的吸湿性效果最好。

If one square inch of copper is used as a heat dissipator for the TO-252, the J-A drops to approximately 50C/W. The SOT-223 package has a J-A of approximately 125C/W when soldered down to a minimum sized pattern (less than 0.1 square inch) and approximately 70C/W when soldered to a copper area of one square inch.

如果一平方英寸的铜是作为的TO - 252热消使用时，司法机构政务长下降到大约50 / W的的SOT - 223封装具有的司法机构政务长大约125C / W的焊接时下跌不到0.1平方英寸的最小尺寸为1型和大约70 / W型焊接时，一铜一平方英寸面积。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷