碳的

Effect of cerium on the ignition point of AZ91D magnesium alloy;2. Probe to the definitions of ignition point and self- ignition point and their relation;3.1 could reduce the carbon ignition point to 380 ℃ and was of a remarkable.

1制备的催化剂能使碳的起燃点降低到380℃左右，且去除碳效果明显，在此基础上，减少钾的含量或增加钙的含量，都会使催化剂的活性有所降低。

Soil carbon,soil total N,and pH belonged to high and soil total P belonged to medium degree spatial correlation at 60m lag intervals,respectively.However,there were significant differences in ranges of spatial autocorrelation among four soil properties,among which the effective range of soil organic carbon was the highest(261m),followed with soil total N(208m),pH(156m),and soil total P(133m).

在60m步长间隔尺度下，土壤有机碳、全氮和pH有强烈的空间相关性，土壤全磷空间相关性为中等程度。4种土壤养分的空间自相关范围具有明显的差异，有机碳的有效变程最大(为261m)，全氮(208m)和pH(156m)次之，全磷的有效变程最小(133m)。

According to the point "some assumptions about steady state diffusion are valid when non steady state diffusion is studied"and carbon conservation law,the carbon contents' leaping condition is given.

按照"在研究非稳态扩散问题时，稳态扩散研究中的有些假定仍然是有效的"的观点，利用碳的守恒定律给出碳浓度的跳跃条件，结合扩散通量条件，推导结果发现这种内边界条件无法解决F／A界面上的迁移。

The influence of environmental variables on distribution of PAHs(1) The concentrations of PAHs were higher in warm temperate zone and subtropical zonethan in low temperature zone;(2) The concentration in plain, hilly land and Ya\'an mountainousregion were higher than in other places;(3) The concentration in paddy fields, dry land andforests were higher than in artificial land and grass;(4) There was positive correlation betweenthe concentration of PAHs and TOC. The correlation was more obvious for 4-rings PAHs thanfor 5-, 6-rings PAHs;(5) The concentration of PAHs in acid soils was higher than in alkali andneutral soils;(6) The concentrations in conifer and spinney forest were higher than inbroad-leaved forest.Part two: The temporal and spatial distribution characteristics of POPs at Basin-MountainTransect.

环境因素对多环芳烃分布的影响(1)温带和亚热带地区土壤多环芳烃含量高于低温地区土壤中多环芳烃含量；(2)在平原、匠陵和雅安市附近的山区多环芳烃含量高于其他地区含量：(3)水田、旱地和林地多环芳烃含量高于建筑用地和草地中含量；(4)多环芳烃含量和土壤总有机碳含量成正比，四环多环芳烃与总有机碳的相关性高于其他多环芳烃的相关性；(5)酸性土壤中多环芳烃含量高于碱性和中性土壤中含量；(6)针叶林和灌木林多环芳烃含量高于阔叶林中的含量。

The oxidized rate decreases with the increase of the substitutional carbon at 900℃.

结果表明：在900℃氧化时，随着合金中的替代碳含量的增加，氧化速率逐渐下降；而在1000℃下氧化超过10min后，Si1-x-yGexCy合金的氧化基本上与碳的含量无关，与Si1-xGex的行为一致。

The low-carb South Beach Diet, for example, now espouses the virtues of eating the Mediterranean way-including lots of carbohydrate-rich fruits and vegetables.

低碳的南海滩饮食，例如，现在采纳的地中海饮食方式的优点，其中包括大量的碳水化合物，丰富的水果和蔬菜。

This Sm-catalyzed reaction firstly efficiently realized the catalytic cycle in the tandem rearrangement/reduction reaction of α-hydroxy epoxides, and moreover the diastereoselective amplification could be distinctly observed when two C1 epimers in substrate were subjected to this catalytic tandem reaction.

该催化的多功能串联反应，高度非对映选择性地一步控制了含有季碳的三个相邻立体中心，有效地构建了&2-季碳1，3-二醇&结构单元，首次实现了此类重排—还原过程的催化循环，其中对于两个C1位的差向异构体底物，此反应具有明显的非对映选择性放大特点。

ABSTRACT Appling the numerical model and control theory to the state identification of carbon migration in dissimilar metal weldments , its law and quantitative calculation were researched. Based on analysising of metallurgical and dynamics properties of DMWs, the influences of welding procedure's factors on their high-temperature properties were studied in this dissertation. The following are the main contents.

本文将数值化建模和控制理论引入到异种钢焊接接头碳扩散迁移状态辨识，对碳的扩散迁移的规律及定量计算进行了研究，在对异种接头冶金性能和力学性能进行分析的基础上，对焊接工艺因素对接头性能的影响进行了研究，主要内容如下： 1。

Putative changes in the δ13C of the ocean relate only to the well-mixed dissolved inorganic C reservoir, and show no relationship to δ18O because the δ18O of sea water is affected by totally different processes.

海洋中的碳同位素变化被认为只与溶解无机碳的充分混合有关，而与氧同位素的变化没有特别大的关系。

From the foot to the top of the mountains,the soil organic matter accumulated gradually. soil organic carbon ; sxidation stability ; Kos value ; vertical zonality ; Altai Mountains

为此，本文以阿尔泰山区的土壤为研究对象，试图初步比较阿尔泰山区土壤有机碳氧化稳定性的变化，讨论其与土壤肥力的关系，希望能够为深入研究和评价这个地区土地利用变化对土壤有机碳的影响提供一些依据。1

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。