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At the end of the process a carbon core of the star will be surrounded by a shell where helium is still being fused into carbon, which in turn is surrounded by and envelope where hydrogen is converted into helium.

该过程结束时碳的星核会被一层仍然在进行氦聚变为碳的壳层包围,而在这个氦-碳聚变层的外面还包围着一层由氢-氦聚变层。

By means of thermodynamics calculation and analysis for samples,the carburization was further researched.

钢中的碳对超低碳钢的性能有很大的影响,针对鞍钢 ASP 中薄板坯连铸生产超低碳钢异钢种连浇过程中铸坯增碳的问题,通过理论计算和取样分析,对异钢种连浇过程铸坯增碳进行了研究,并对工艺进行改进。

The study has shown:(1) With increasing sediment depth and the woody giblets, the total organic carbon, the extraction of benzene , the total humic acids and the unhydrolyte are enhanced, while the hydrolyte is decreasing.(2) According to the GC-MS analysis, n-alkane,n-alkan-2-ones and n-alkanones are composed mainly of long-chains,such a result is thought to be characteristic of a herbaceous input from 2300a.B.P. n-alkanones exist in the samples may be considered as the evidence of microorganisms activity.(3) It is showed that the lipids is more sensitive to the climate change than the floristic. The proxy of the pollen spore of the peat stratum is different from the normal environment proxy. It is one of the main reasons that the sensitivity difference of the bog vegetation reacting to the climate isn't accordant with the log of the fat molecule fossil and biology fossil.(4) The transformation of the peat organic carbon is under the influence of temperature,acidity,organic material constituting, etc, and it showed the up-trend with the depth. In the short-term scale, the conversion of the peat organic carbon is effected by seasonal water,regional climate and vegetations; while in the long-term scale, it is controlled mainly by the climate.(5) According to the comparing the orderliness of organic compound,vegetation giblets with the depth to the characteristics of the peat molecule fossil with the section, in the development of this peatmire, 1500a B.P(210cm)is regard as the borderline of the late Holocene, the keynote of the front period is warm with several cold fluctuations, and the trend of the back period is dry and cold although there were several fluctuations.

研究表明:(1)随深度的增高及植物残体中木本残体的增多,总有机碳、苯萃取物、总腐植酸、不被水解物含量逐渐增高,而易水解物含量减少;(2)GC- MS分析显示,正构烷烃,直链烷基2-酮和正烷醇均以长链组分为主,揭示了该泥炭柱剖面2347a.B.P的母源输入以草本植物为主;甲基酮类和短链正烷醇的存在是微生物活性很大的生物证据;(3)通过有机分子标志物与孢粉、植物残体等指标的对比研究表明:脂类化合物对气候变化的反映要比植物种灵敏得多,不同沼泽植物对气候变化的敏感性的差异是脂类分子化石记录与生物大化石结果很难一致的主要原因之一;(4)泥炭有机碳的转化受到温度、酸度、有机物质组成等很多因素的影响,短时间尺度,泥炭有机碳的转化受季节性降水、地方气候和植被等因素的影响;长时间尺度,泥炭地有机碳的转化,受气候条件控制;(5)总结泥炭分子化石特征、泥炭有机质各组分含量及植物残体组成随深度的变异规律,分析结果显示该泥炭地层形成过程中,1500a B.P(210cm)可作为划分前后晚全新世的界线,前期的基调是气候偏暖,但又有几次偏干冷气候的反复,后期气候以干冷为主,其间虽有几次上升波动,但整体趋势不变。

The illuviation depth of carbonate carbon in soil is different from the different geographical locations.

因此,研究碳酸盐形式的土壤无机碳的空间分布特征对准确估算土壤碳库储量、正确评价土壤在陆地生态系统碳循环以及全球变化中的作用有重要意义。

Therefore, the study of dynamic transport and flux of organic carbon in salt marsh areas is the key role in ecosystem of salt marsh areas, which is also a neglecting part of global carbon cycle research in coastal zone.

因此,盐沼地区有机碳的动力输移与通量研究在湿地生态系统碳循环中起着关键性作用,也是全球碳循环研究在海岸带比较薄弱的一环。

Carbon that is higher than the stoichiometric value brings about the formation of free carbon, i.e.

ISO 4505 高于化学计量值的碳会导致游离碳的形成,即材料中的非化合碳。

In the photopolymerization system of AN initiated by AQ and P , the polymerization rates sensitized by addition of carbon tetrabromide to AQ or P are much higher than that of AQ or P alone.

当在AQ引发的AN光聚合体系中,加入四溴化碳后,聚合速率明显加快,所得聚合物特性粘度低于不加四溴化碳的产物,证明四溴化碳与AQ在光照射下,形成激基复合物,参与了引发反应。

Featuring 3-Carbon layers, the Boll TriCarbon offers uncompromising power while still maintaining excellent control.

国内某些厂家却搞些什么3碳5碳,甚至10木9碳的东西出来,颇有些东施效颦、邯郸学步的感觉。

Carbyne is one of carbon's allotropes. All carbon atoms were linked in the structure of liner conjugation by sp hybridization.

碳炔是碳的一种同素异形体,分子中所有的碳原子均以SP杂化成键组成一维共轭长链结构。

The results indicated that OC in crop root and stubble was available for balance of soil OC in plough horizon, but was not enough generally as only mineral fertilizers were supplied. With no fertilizer, the biomass and the amount of OC of crop root and stubble both decreased year after year.

试验结果还表明,根茬有饥碳对维持耕层土壤有机碳的平衡有相当大的贡献,但在单施化肥时大多不足以补充矿化消牦;在不施肥时,根茬生物量和有机碳量均逐年下降。

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But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊!不用提了。提到肉,真是糟透了。

Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.

Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。