查询词典 carbon

The results from electron micrographic analysis show that soot oxidation is influenced by aggregation and agglomeration of soot particulates, at the same time, the crystallograms show that the previous soot particle is non-crystal carbon, but in the latter conbustion period, a very small amount of crystal soot with unstable lattice at relatively higher flame temperature is formed. The crystallization happens greatly in period of combustion when temperature is relatively lower. The smoke particulates consist of crystal carbon similar to chaoite crystal latice and noncrystal carbon.

碳粒浓度和KL变化曲线表明预混合火焰中碳粒浓度远远小于扩散火焰，其原因在于不均匀的燃油—空气混合气结构在高温缺氧条件下产生大量碳粒，在温度峰值附近碳粒浓度亦达到峰值，其后迅速氧化，当温度低于2000°K时碳粒基本上不氧化，碳粒的电子显微分析表明碳粒的氧化受碳粒的集聚过程的影响，在燃烧初期碳粒是非晶体，碳粒的结晶在燃烧后期和排放过程中大量出现，排放碳烟微粒由晶体和非晶体碳组成。

The dynamics of soil organic carbon was analyzed by using laboratory incubation and double exponential model that mineralizable SOC was separated into active carbon pools and slow carbon pools in forest soils derived from Changbai and Qilian Mountain areas.

本文利用土壤培养实验和双指数模型（把土壤有机碳划分为活性碳和缓效性碳库）的方法，来分析确定长白山和祁连山的土壤有机碳的动态变化。

The results showed that organic manure combined with constant chermical NPK fertilizer continually increased the content of soil organic carbon, readily oxidable organic carbon, humus cat.n, and their proportion in total organic carbon, HAC, FAC and HAC/FAC, but decreased Kos progressively.

结果表明，采用有机肥料配施常量NPK化肥，土壤有机碳、易氧化有机碳、腐殖酸碳及其占总有机碳比率、HAC、FAC和HAC／FAC不断提高，Kos持续下降，其变化速率表现为递减；长期不施肥和单施常量NPK化肥则造成Kos持续上升，其余指标以递减速率下降。

In this paper,the nanometer carbon blacks of high oxygenous functional groups were used for carrier of target antitumor medicine,it was studied that the nanometer carbon black was oxidized by two ways and that the oxidized carbon black was used to graft antitumour etoposide(VP-16) by two ways also.

本文以高含氧官能团的纳米炭黑为抗肿瘤靶向药物的载体，研究了纳米炭黑的两种氧化改性方法以及在改性后的纳米炭黑表面接枝抗肿瘤药物依托泊苷(VP-16)的两条合成路线。

In this thesis we used two types of low-carbon ductile as the basal of low-carbon ductile cast—infiltration, one is as-cast high-toughness pearlitic low-carbon ductile, the other is as-...

用我们自己配制的合金粉末进行低碳球铁表面铸渗合金化后，得到的表面渗层的硬度最高可以达到HRC58，远远高于母体的硬度。

It has been successfully applied in the fields of high-performance carbon fiber, needle coke used for ultrahigh power electrode, anode of rechargeable lithium-ion batteries, activated carbon with super-high surface area, catalyst supports and carbon foams、 In this paper, the effects of raw materials and pyrolysis conditions including heat-treatment temperature, pressure and time on the formation and development of carbonaceous mesophase were discussed in detail Since complex constitutes of raw material, various reactions and phases are involved in the process of mesophase evolution, we suggest that a given carbonaceous mesophase product should be manufactured by selecting raw materials and setting pyrocondensation conditions according to the specific requirement of the product, so that products with the best structure and performance could be obtained.

它在高性能炭纤维、超高功率电极用针状焦、锉离子二次电池负极、超高比表面积活性炭及催化剂载体、泡沫炭等领域得到了较好的应用。综述了原料和热缩聚条件对炭质中间相形成和发展的影响，这些影响因素包括原料的种类、热缩聚温度、反应压力和保温时间等。通过讨论指出，由于炭质中间相涉及的原料种类多样，热缩聚制备过程中涉及的反应、物相复杂，因此，在制备特定性能的产品时，应针对产品的特定性能要求来选择原料、设定热缩聚条件，以制得具有最佳结构和性能的产品。

The benzene carbon black, resin pyrotic carbon and graphitized carbons were employed to find the relationships between the carbon structure and the differential capacity, reversible capacity and diffusion rate of lithium intercalation.

我们选用苯碳黑、树脂裂解碳和催化石墨化碳等在结构上有明显差别的碳素材料做研究对象，系统研究了碳材料结构特征与锂在其中的可逆插入微分容量、可逆插入容量、可逆循环性和扩散速率的关系。

For the cases of CHD,the level of plasma endothelin-1 in these of HPIgG seropositivity is higher than that of HP seronegativity(P.05).(4) No correlation between chronic HP infection and essential hypertension,diabetes mellitus,tobacco use,age,gender,vocation,living condition ,alcohol consumption and family history was found.(5) For the cases of positive for Carbon-14 urea breath test in CHD patients, the level of plasma GLU is higher than that of negativity for Carbon-14 urea breath test (P.05).The rate of positive for Carbon-14 urea breath test in CHD patients with diabetes mellitus is significantly higher than that of CHD patients without diabetes mellitus.

结果(1)冠心病组血清HPIgG阳性率明显高于非冠心病组(45.54％vs 28.30％，P＜0.05)；(2)冠心病组C-14呼气试验阳性率明显高于非冠心病组(54.46％vs 30.19％，P＜0.01)；(3)冠心病组慢性HP感染者血浆ET-1水平明显高于非HP感染者(P＜0.05)；(4)慢性HP感染与血脂、高血压史、糖尿病史、吸烟史、年龄、性别、职业、生活环境、饮酒史以及冠心病家族史无关；(5)现症HP感染与糖尿病及空腹血糖升高有关(P＜0.05)；与血脂、高血压史、吸烟史、年龄、性别、职业、生活环境、饮酒史以及冠心病家族史无关。

Through a series of quenching, tempering, tensile testing, low-temperature impact test and metallographic analysis, we ultimately came to the following conclusions:(1) low-carbon alloyed steel 20CrMn2NiMoV quenching at 870℃ and tempering at 200℃, whose structure contains tempered dislocation lath martensite and few small bainite under mixed, has the best obdurability;(2) Carbon Steel 45CrMn2NiMoV quenching at 850℃ and tempering at 620℃, whose structure is sorbitic, has a performance less than that of low-carbon Alloyed steel, but it can also meet the basic design requirements.(3) Mn can substitute for the role of Ni within limited extent.

通过一系列淬火、回火、拉伸试验、低温冲击试验以及金相分析，最终得出以下主要结论：（1）低碳合金钢20CrMn2NiMoV经870℃淬火+200℃回火，得到回火位错型板条马氏体+少量细小下贝氏体的混合组织，具有最佳的强韧性配合；（2）中碳合金钢45CrMn2NiMoV经850℃淬火+620℃回火，得到回火索氏体组织，综合性能虽然不及低碳合金钢，但也能基本满足设计要求；（3）Mn在一定程度上能够替代Ni的作用，适量的Mn和Ni相互配合可以得到最佳的低温韧性，因此&以Mn代Ni&是低温钢材料研究开发中一条可行的适合我国资源状况的合金化思路。

In general, the distribution of stable carbon and nitrogen isotopes revealed the mixing inputs of terrigenous and marine organic matter controlled the stable carbon and nitrogen isotope compositions in sedimentary organic matter. However, a series of physical, chemical and biogeochemical processes occurring in the local environments had also the significant influence on the stable carbon and nitrogen isotope compositions in organic matter.

研究区域内，稳定碳、氮同位素的地区分布和季节变化特征揭示，有机质中稳定碳、氮同位素组成不仅受陆源和海源有机质输入量之间消长变化的影响，同时一系列的生物地球化学过程、人为有机质的输入和沉积物粒度与叶绿素含量对碳、氮同位素组成均存在一定的改造作用。

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。