查询词典 carbon

The direct incorporation of U-13C glucose was estimated by the intensity increase of m/z to F(F was parent fragment, and n was the carbon number in the fragment), while the total isotope incorporation from the added 13C could be calculated according to the abundance ratio increment summation from m/z (Fa+1) through (Fa was the fragment containing all original skeleton carbons, and T was the carbon number in the amino acid molecule). The 13C enrichment in the target compound was expressed as atom percentage excess, and that of D-amino acid needed to be corrected by the coefficient of hydrolysis-induced racemization. The 13C enrichment reflected the carbon turnover velocity of individual amino acid enantiomers, and was powerful to investigate the dynamics of soil amino acids.

外加葡萄糖直接合成氨基酸的比例可利用质谱碎片的相对强度变化来评价（n为质谱碎片F中含有的碳原子数目）；而源于葡萄糖的13C同位素在氨基酸分子中的富集程度是所有同位素峰相对强度变化的总和。13C在目标化合物中的富集比例用原子百分超评价，D氨－基酸的APE还需进一步利用水解诱导的外消旋化系数校正。13C在目标化合物中的富集程度可反映各氨基酸手性异构体的碳循环速率大小，是研究土壤氨基酸动态变化的有力工具。

Proper shrubbery – Tamarix ramosissima was taken as the research subject, Through the observation of upper organic matter aggradation and the research of underground annual changes of soil organic carbon. Make sure the accumulations of soil organic carbon and the carbon cumulation under the Tamarix,The results indicate that: 1）Based on one year's observation,We found that,the formation of annual layer depending on the dynamic balance between hearty growth of Tamarix and reposeful accumulated environment.

本研究选择干旱区特征性灌木植物——柽柳为研究对象，通过对柽柳冠下地表有机质沉积的观测以及地下土壤有机碳含量年际变化的研究，查明柽柳冠下土壤有机碳的积累情况及其碳蓄积作用，并探讨柽柳在全球气候变化和碳循环中的作用及贡献，为进一步研究干旱区碳循环及其碳汇功能提供基础数据。

MgO-C major producers, aluminum MgO-C, Al-Mg is not brick, aluminum spinel carbon bricks, low-carbon non-carbon brick, aluminum silicon carbide bricks, skateboards brick, nozzle brick, block bricks, a steel I brick, air brick, precast tundish board,×, brick, iron groove materials, castables, gunning materials, the bottom tie material, combined with 13 major series, etc.

主要生产镁碳砖、铝镁碳砖、铝镁不烧砖、铝尖晶石碳砖、低碳无碳砖、铝碳化硅砖、滑板砖、水口砖、座砖、出钢口砖、透气砖、中间包预制板、高铝砖、粘土砖、铁沟料、浇注料、喷补料、炉底打结料、结合剂等13大系列40多个品种，产品畅销国内30多家大中型钢铁企业，并出口德国、乌克兰、澳大利亚、越南和伊朗等20多个国家和地区。

Controlled synthesis of carbon nanotubes and assembling them into macroscopic structures are of great importance to the applications of carbon nanotubes, and a deep understanding of the growth mechanism of carbon nanotubes would be an indispensable prerequisite for well-defined synthesis in a controllable way.

碳纳米管的可控制生长，及其宏观尺度结构的制备，对于碳纳米管的应用具有重要的意义，为了实现准确的生长控制，对碳纳米管生长机理的深入了解是不可缺少的前提条件。

Soil organic carbon is an important pool of global carbon, and SOC transformation controls the global biogeochemical cycle of carbon.

土壤有机C是维持全球C平衡过程中的重要C库，其降解和转化在地球化学循环中占有重要地位。

As used herein, a highly unsaturated hydrocarbon is defined as a hydrocarbon containing at least one triple bond, conjugated carbon-carbon double bond, or cumulative carbon-carbon double bond.

本文所使用的高度不饱和烃定义为含有至少一个叁键、共轭的碳碳双键或累积的碳碳双键的烃。

Since the change from one to another involves rotation about the carbon-carbon bond, we describe this freedom to change by saying that there is free rotation about the carbon-carbon single bond.

自从变化以后从一对另外一包括关于碳-碳的束缚的旋转，我们描述这自由藉由说有关于碳-碳的独身者束缚的自由的旋转改变。

However, some carbon compounds, such as: carbon monoxide, carbon dioxide, carbon disulfide, carbonate compounds, cyanide, etc. is still in the scope of inorganic chemistry described ...

然而某些含碳化合物，如：一氧化碳、二氧化碳、二硫化碳、碳酸类化合物、氰化物等等仍属于无机化学讲述的范畴。。。。

The black carbon that isolated by density fractionation is from Hsienshi of Changhua county. The surface area is 14 m2/g , and the content of carbon is 17%. Surface area of the black carbon that produced by burned straw is 78 m2/g and the content of carbon is 14%.

从彰化线西土中，使用比重法分离出的黑炭比表面积为14 m2/g，碳元素含量为17%，自行燃烧稻草所产生的黑炭，其比表面积为78 m2/g，碳元素含量为14%，其比表面积差异的原因在於黑炭是否有经过长期在环境中驯化。

Long-chain Dicarboxylic acid; 11 carbon dicarboxylic acid; twelve carbon dicarboxylic acid; tridecanedioic acid; 14 carbon dicarboxylic acid; 15 carbon dicarboxylic acid; carboxylic acid

一期工程年产6000吨的发酵长碳链二元酸（DC11~DC15、DC18）生产线于2003年3月建成投产，装机容量6万KW的热电厂于2004年3月并网发电。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。