查询词典 carbon

After the addition of carbon, the microhardness in the grain boundary is about 150 MPa higher than that in the grain. The fracture type of pure Mo is intergranular fracture, the grain boundary strength of Mo-C alloy is strengthened due to the addition of carbon and the fracture type is changed to transgranular fracture, transcrystalline fracture and a large number of cleavage planes and steps are observed on the bending fracture surface. But if the carbon content is too high, the carbide precipitation will be severe at grain boundaries and is deleterioated to the ductility of the alloy.

添加碳后，合金的晶界显微硬度比合金的晶内显微硬度高150MPa左右；纯钼的断裂方式以沿晶断裂为主，添加碳后，由于合金的晶界强度得到提高，合金的断裂方式变成以穿晶断裂为主，断口上有大量的解理面，具有明显的河流状花样和解理台阶，且塑性越好的断口，撕裂岭也越多；当添加的碳含量偏高时，在晶界处产生了大颗粒的碳化物，这种大颗粒的碳化物会降低合金的塑性。

It is shown that the surface of carbon fiber displays a high propens ity to nucleate PP crystallization. The nuclei density at the surface of carbon fiber is much higher than that in the bulk area, and the resulting radial growth produces a type of transcrystalline structure, and the characteristic temperature of crystallization increases with carbon fiber concentration.

碳纤维表面对聚丙烯结晶过程具有明显的促进作用，纤维表面成核密度轻高，结晶生长成为横穿结晶，结晶特征温度随碳纤维加入而有不同程度的升高。

The carbons in explosives are decomposed into gas-like carbon atoms in the detonation reaction zone, then unoxidized carbon atoms coagulate into carbon liquid droplets and finally consolidate into solid diamonds The new mechanism differs from one conclusion that carbons of explosives are at first transformed into solid graphites, then into diamonds, and also differs from the conclusion that gaseous carbons coagulate into liquid droplets in the reaction zone, then crystalize into diamonds in Taylor rarefaction wave zone.

修正了有关炸药中的碳在反应区内先转变为石墨，然后石墨再发生相变生成金刚石的论点以及认为在反应区内气态碳凝聚为碳液滴，液滴在Taylor稀疏波区凝固成金刚石的论点。

Especially, the difference of the nearest-neighbor hopping integral is due to the effect of the curvature of the carbon nanotubes. So, in fact there is a very narrow energy gap near the Fermi energy of unsquashed metallic zigzag carbon nanotubes, and, a slighter deformation is required to open a considerable energy gap in metallic zigzag carbon nanotubes than that in armchair nanotubes.

特别是，最近邻格点之间的跃迁积分的变化与碳纳米管的曲率紧密相关，因此实际上，理想金属型 zigzag 碳纳米管本身具有微小能隙，而施加比 armchair 碳纳米管小的多的压缩量，就可以使金属型 zigzag 碳纳米管在费米能处打开相当的能隙。

Total belowground carbon allocation represents an important carbon flux in forest ecosystems thus relates closely to carbon sequestration.

森林地下碳分配是森林碳循环的重要通量，对森林碳吸存有十分重要作用。

The present dissertation deals with:(1) Exploring the feasibility of the CO〓 methanation and the conversion CH〓/H〓 into C〓 hydrocarbons under plasma with catalyst at ambient temperature and atmosphere.(2) Designing a reactor and preparing some catalysts suited for the conversion of carbon dioxide via the cooperation effect of plasma and catalysts.(3) Optimizing reaction conditions of conversion carbon dioxide to C〓 hydrocarbons in the proposed process.(4) Studying the reaction mechanism of conversion carbon dioxide to C〓 hydrocarbons under plasma by using in situ OES technology.(5) By the results of characterizing coked catalysts, exploring the reasons that result in the coking of catalyst and the paths for decreasing the deposit in the catalyst under plasma.(6) Analyzing the energy efficiency of the plasma catalysis and exploring the paths for improving the energy efficiency.

论文的主要研究工作包括：（1）探索脉冲电晕等离子体与催化剂共同作用CO〓／H〓甲烷化和由CH〓/H〓合成C〓烃反应的可行性；（2）研制等离子体催化CO〓转化的反应器和适配的催化剂；（3）优化等离子体催化CO〓转化制C〓烃反应的工艺条件和电参数；（4）利用原子发射光谱原位技术对等离子体反应的诊断结果，对等离子体催化CO〓转化制C〓烃反应的机理进行推断；（5）通过对积碳催化剂的表征结果，分析积碳的类型及其成因，并探讨减少积碳的途径；（6）通过对等离子体催化CO〓转化制C〓烃反应能量效率的分析，探讨提高等离子体催化反应能量效率的途径。

A process for decomposing CO2 generated industrially includes such steps as collecting CO2 tail gas, dusing and desulfurizing, oxidizing degradation in oxidizing tower, decomposing the oxidized tail gas in reactor to obtain oxygen gas for exhausting it and carbon-contained gas, and preparing carbon powder in carbon absorption tower with electric decarbonizing unit.

一种工业产生二氧化碳的分解处理方法，它包括：对二氧化碳尾气进行收集；对收集的尾气进行除尘和脱硫处理；将处理后的尾气送入氧化塔做二次氧化降解处理；将二次氧化的尾气送入反应槽进行分解；将分解后的氧排出，分解后的碳气送入一个碳吸塔的电除碳器形成碳粉。

In the other hand, graphite carbon and SiC oxidizing produce CO、SiO〓 and in the same time CO separates graphite carbon partially, this effect will decrease decarburizing rate and corrosion rate for Al〓O〓-SiC-C brick. TiO〓 and SiO〓 protective layer forming and separating graphite carbon are the main factor of resistance smelting reduction molten slag-iron to corrode and the main feature of corrosion process.

Al〓O〓-C-SiC砖在侵蚀过程中，由于SiC氧化后产生CO，SiO，并析出碳和降低耐火材料气孔率及氧化形成的SiO〓成为保护膜，使熔体对耐火材料的侵蚀能力降低，这两种耐火材料的侵蚀速度都是随着使用时间延长，耐火材料侵蚀速度逐渐降低。

Although benzene is often represented with alternating single and double bonds between carbon atoms, the electrons in the bonds are shared or delocalized in such a way as to make all carbon-carbon bonds alike .

虽然往往把苯描绘成碳原子之间按单、双键交替排列，但事实上键中的电子是共享的，或者说是非定域的，其结果是使所有的碳原子都是等同的。

Although benzene is often represented with alternating single and double bonds between carbon atoms, the electron s in the bonds are shared or delocalized in such a way as to make all carbon-carbon bonds alike.

虽然往往把苯描绘成碳原子之间按单、双键交替排列，但事实上键中的电子是共享的，或者说是非定域的，其结果是使所有的碳原子都是等同的。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。