查询词典 carbon

The δ〓S value of pyrite, sphelerite and arsonopyrite is in the range of 4. 0‰ and -4. 2‰ with the highest frequency occurring around zero, indicating a uniformed sulfur source. The large variation and mainly negative values (0.2‰～-11. 3‰) of δ〓S for stibnite could be interpreted by isotope fractionation. The carbon isotopic characteristics exhibit a mixing nature of magmatic carbon and organic carbon.

矿床中的热液成因黄铁矿、闪锌矿和毒砂的δ〓S＝4.0‰—-4.2‰，呈塔式分布，δ〓S集中在0附近，表明其成矿体系具有均—化硫的同位素组成，而辉锑矿的δ〓S变化范围较大(0.2‰—-11.3‰)，除一个样品外均为负值，这是硫同位素分馏作用的结果。

Based on the theory of Welfare Economics and market structure theory this paper analysis the concept of carbon tax and externality of the consumers and producers in the forests carbon sink market, belive that the impact of the market is correcting externality, prove that the forests carbon sink market is oligopsony at presant.

目前森林碳汇市场属于买方寡占市场，政府需要设计合适的碳税政策，对排污企业征收碳税，使企业在缴纳碳税和购买森林碳汇之间选择。

Coniferous forest ; broadleaved forest ; readily oxidizable carbon ; particulate organic carbon ; soil organic carbon density

针叶林；阔叶林；土壤易氧化碳；土壤颗粒有机碳；土壤有机碳密度

The present invention is process of separating and assembling metallic single wall carbon nanotube and semiconductive single wall carbon nanotube synchronously. The process includes the following steps: photoetching silica substrate to prepare Au electrode, cutting intervals in the electrode with focused ion beam, soaking the electrode in DMF solution of single wall carbon nanotube, and applying electric field of 2-8 V magnitude and 1-10 Hz frequency.

本发明的目的在于提供一种金属性和半导体性单壁碳纳米管的同步分离与组装方法，该金属性和半导体性单壁碳纳米管的同步分离与组装方法包括如下步骤：通过常规光刻在含二氧化硅的衬底上制备金电极的步骤；利用聚焦离子束在电极上刻出若干个间隙的步骤；将上述电极浸入到单壁碳纳米管的DMF溶液的步骤；施加大小为2～8V、频率为1～10Hz的电场的步骤。

Aimed at solving the problem that high content of unburned carbon in fly ash is unfavorable for its comprehensive utilization in large scale, the fundamental principle of flotation for recovery of unburned carbon from fly ash was theoretically analyzed and the full flotation flow for the recovery of unburned carbon from fly ash was tested.

针对粉煤灰中未燃炭含量过高不利于大规模综合利用的问题，从理论上分析了浮选回收粉煤灰中未燃炭的基本原理，采用全浮选流程对粉煤灰中未燃炭进行了浮选回收试验，探讨了影响粉煤灰中未燃炭浮选效果的主要因素，确定了适宜的工艺条件。

It has high friction properties, resemble anti-wear properties and brake moment curve compared with Dunlop company and Messier-Bugatti company carbon brake discs materials. It has excellent mechanics performance and axis heat conduct coefficients compared with abroad carbon brake discs materials. The friction properties of RTO Wetness normal brake increased by 23％-29% than Dunlop carbon brake discs materials.

与英国Dunlop公司、法国Messier-Bugatti公司生产的炭刹车盘材料相比，其高摩擦特性及抗磨损性能相当，刹车力矩曲线形态相似，且力学性能、轴向导热系数明显高于国外炭刹车盘材料，RTO刹车湿态刹车时的摩擦特性高出Dunlop炭刹车盘材料23％-29%。

It could use Vat Blue RSN as a nitrogen source, but not as a carbon source. The medium composing of saccharose and ammonium nitrate as carbon and nitrogen sources was decolorizing potential markedly during different combinations of carbon and nitrogen sources.

此外， 菌株Asaw117能利用还原蓝RSN作为氮源，但不能利用其为碳源；几种碳氮源组合实验中，菌株在蔗糖、硝酸铵组合的査氏培养基脱色效果为好。

Generically, forest restore is thought would sequestrate more atmosphere carbon, but carbon sequestration through aboveground biomass increasing may be offset by soil organic carbon loss.

一般认为，恢复森林可以增加碳汇，但在较为湿润的地区，灌木、树木入侵引起的地上生物量增加将被土壤有机碳的流失所抵消。

On 100t BOF-130t LF of Handan NO.3 steel works,with LF refining technology alone,for heavy desulfurization mission and long refining cyclic,the phenomenon of increasing silicium and carbon is much serious on refining low carbon steel specially the cold-rolling low carbon steel.The results impact the products'final performance and percent of pass.

单独采用LF精炼工艺，脱硫任务重，精炼周期长，冶炼低碳钢，特别是冶炼冷轧低碳钢时，LF炉在脱硫的同时，增硅增碳的现象较严重，影响了产品的最终性能和合格率。

The IR spectra indicated that the functional group—COO〓 in PASP linked to the surface of carbon steel. The pitting corrosion inhibition of tungstate and BTA on carbon steel and the passivation of carbon steel in solutions containing sodium borate were studied by the measurement of polarization curves and the curves of current vs.

失重法研究钨酸钠与聚天冬氨酸对碳钢的协同缓蚀效应发现，钨酸钠与PASP对自来水中的碳钢有协同缓蚀作用，加入锌离子可产生进一步的协同作用，碳钢表面分析表明：聚天冬氨酸是以羧基在碳钢表面成键。

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。