查询词典 hydrogen

It's not currently known whether hydrogen peroxide is present on Ceres, but nothing rules it out, either.

目前，在 Ceres 上是否存在双氧水还不知道，但是也没有任何证据能说明其不存在。

In this dissertation, Hydrogen production by steam reforming of ethanol has been investigated over ceria supported Ir and Ni catalysts. The catalytic performance of Ir and Ni catalysts supported on different metal oxides were also studied.

本论文重点研究了氧化铈担载的Ir和Ni催化剂上的乙醇水汽重整制氢反应，同时也考察了不同载体担载的Ir，Ni催化剂。

Comparing result data of hydrogen masers and cesium clocks are also presented in detail.

研究了频率比对时差测量法在NTSC守时系统中的应用，给出了实际测试结果。

The method involves exposing the cells to a compound having the formula I in which: w is a nucleic acid x is a non-amino acid or non-peptide nucleic acid binding group y is a spacer having a chain length equivalent to 1-30 carbon-carbon single covalent bonds or is absent R4 is H or halogen or CH2O-R3; and R1, R2 and R3 are the same or different and are either hydrogen, methyl, ethyl, alkyl, alkenyl, hydroxylated alkyl, hydroxylated alkenyl groups or ether containing alkyl, alkenyl, hydroxylated alkyl or hydroxylated alkenyl groups optionally being an acyl group having a carbon chain length equivalent to 3-24 carbon atoms saturated or unsaturated, with the proviso that at least one of R1, R2 or R3 includes a group having a carbon chain of 3-24 carbon atoms saturated or unsaturated, or to a compound having the formula II in which: w is a nucleic acid x is a non-amino acid or non-peptide nucleic acid binding group y is a space having a chain length equivalent to 1-30 carbon-carbon single covalent bonds or is absent, R5 is alkyl, alkenyl, hydroxylated alkyl, hydroxylated alkenyl group or ether containing alkyl, alkenyl, hydroxylated alkyl or hydroxylated alkenyl group optionally being an acyl group having a carbon chain length equivalent to 3-24 carbon atoms saturated or unsaturated, with the proviso that R5 includes a group having a carbon chain of 3-24 carbon atoms saturated or unsaturated.

该方法包括使细胞暴露于具有式的化合物，在式中：w是核酸，x是非氨基酸或者非肽核酸结合基团，y是具有等于1―30个碳―碳单共价键的链长的间隔基或者不存在，R4是H或者卤素或者CH2O－R3；R1、R2和R3是相同的或者不同的并且是氢、甲基、乙基、烷基、链烯基、羟基化烷基、羟基化链烯基或者包含烷基、链烯基、羟基化烷基或羟基化链烯基的醚，任选地是来源于具有等于3―24个碳原子的碳链长的饱和或不饱和脂肪酸的酰基，其条件是R1、R2或者R3的至少一个包括具有3―24个碳原子的饱和或不饱和碳链的基团，或者使细胞暴露于具有式的化合物，在式中：w是核酸，x是非氨基酸或者非肽核酸结合基团，y是具有等于1―30个碳―碳单共价键的链长的间隔基或者不存在，R5是烷基、链烯基、羟基化烷基、羟基化链烯基或者包含烷基、链烯基、羟基化烷基或羟基化链烯基的醚，任选地是具有等于3―24个碳原子的饱和或不饱和碳链的链长的酰基，其条件是R5包括具有3―24个碳原子的饱和或不饱和碳链的基团。

Nylon, for example, is a manmade fibre with molecules made out of carbon chains in which atoms of nitrogen, hydrogen, and oxygen fit in a particular arrangement.

例如，尼龙就是一种人造纤维，这种纤维由碳链组成的分子构成，而在碳链中，氮、氢和氧原子处于特殊排列状态。

As the structure and properties of DNA are related to environment, the base-stacking and hydrogen-bond interactions change as one variable of the environment conditions.

DNA的分子结构和特性与环境因素密切相关，当环境条件改变时，碱基的堆积、氢键相互作用以及磷酸基团之间的斥力都将随之改变。

Hydrogen is the lighted chemical element of all.

氢是所有化学元素中最轻的元素。

We refer specifically to the "HYDROGEN AND NUETRONS ATOMIC BOMB", as well as other terrible explosives CHEMICAL WARFARE.

我们特别谈到"氢和中子弹"，以及其它可怕的化学战争。

Also, the chemisorption measurements revealed that hydrogen and carbon monoxide adsorbed on the same active sites of the catalyst.

此外，化学吸附测试结果表明氢气和一氧化碳是在催化剂表面同一活性中心上吸附。

For well-dispersed Pt, all particles are essentially on the surface available for chemisorption by an equal number of oxygen or hydrogen atoms

对于分散良好的铂，表面上的全部粒子在表面上基本上都能被相同数量的氧原子或氢原子进行化学吸附。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。