碳的

In this thesis, we want to describe the new one-carbon and three-carbon chain extension and ring expansion of 2-aroyl-3,4-dihydro-2H-naphalen-l-one, which is the first report based on our knowledge.

本文在前人的研究基础上，首次开展了α—芳酰基苯并环己酮增加一个碳原子和三个碳原子的自由基扩环和链增长反应，以及自由基加成成环反应。

Using these diagrams,thermodynamic analysis is carried out to show the effect of technical conditions on soda decomposition of scheelite.

通过热力学计算，绘制了25℃下白钨矿在总碳浓度为1 mol/L Na2CO3溶液中各主要溶解组分的lg c—pH图，以及白钨矿在不同总碳浓度下Na2CO3溶液中CO 32-和WO42-的lg c—pH图。

Compared with traditional metal, semimetal and carbon/carbon composite materials, C/SiC exhibits many outstanding advantages like low density, stable coefficient of friction, low wear, large brake ratio and long service life.

与传统的金属、半金属和碳／碳复合材料相比，C／SiC具有密度低、摩擦系数稳定、磨损量小、制动比大和使用寿命长等突出优点，在高速列车、汽车、飞机等领域具有广泛的应用前景。

The forest of the study area is a good reservoir of organic carbon so has a good capacity to sequester organic carbon from the atmosphere.

森林是树木有机碳贮量最好的资源，可以从大气中吸收大量的有机碳。

It is important also to note that this is the natural way to sequester carbon and that all the carbon that we are burning from fossil fuels was originally removed from the atmosphere by photosynthesis.

这太棒了，确实，光合作用塑造地球和整个生态进程，认识到这是一种自然的方式来吸收碳以及我们燃烧化石燃料产生的所有碳原本是由光合作用将它清除大气这一事实很重要。

This in turn will reveal the total quantity of sequestered CO 2 available for trade or sale as carbon offsets.

这反过来将揭示固碳总量的二氧化碳可用於交易或出售的碳抵消。

The research on soil respiration and carbon sequestration in vegetation is important for understanding carbon cycle in terrestrial ecosystem.

土壤呼吸和植被碳储存对陆地生态系统中的碳循环具有重要影响，是全球变化研究中的重要内容。

We reviewed the application of ionic liquids in organic synthesis in recent years, including both stoichiometric and catalytic versions.

第二部分对可能在离子液体，和中进行的碳-碳键形成反应进行了系统的研究。

Using this varve dating results, we calibrate the other dating methods (radiocarbon dating and U-series dating) which were carried out in Lake Sugan. It was found that in the Little Ice Age with clastic varve type, radiocarbon dating has 2630 years radiocarbon reservoir effect, while beyond the LIA, the radiocarbon reservoir changed as the time passed.

通过已经得到验证的年纹层年龄-深度序列，对苏干湖其它测年手段~(14C测年和铀系测年进行验证，发现在碎屑类纹层沉积阶段即小冰期阶段，水生植物残体的~(14)C测年存在2630年碳库效应，小冰期以外时段碳库效应责随时间变化。

It was found that the endo-type sulfonium salts were also worked but afforded the corresponding cyclopropanes with opposite absolute configuration compared with that from the exo-type salt.

考察了硫盐结构对反应的影响，当硫盐中碳-硫键位于樟脑骨架 endo 位置和碳-硫键位于 exo 位置时所得环丙烷化反应主产物的绝对构型相反。

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。