查询词典 alkanes

The activation and utilization of alkanes is one of the important aspects in the field of catalyzin...

烷烃的活化和利用是催化发展的重要方向之一，活化烷烃分子往往需要酸性载体与金属复合的双功能催化剂的参与。

The relationship between the refractive index and molecular structure of 81 alkanes was studied by quantitative structure-property relationship method.

运用定量结构－性质相关技术研究了81个烷烃分子的折光指数与分子结构间的定量关系。

Selective oxidation of methane and light alkanes is one of the most challenging problems in terms of heterogeneous catalysis and surface s...

甲烷和低碳烷烃选择性氧化是多相催化和表面科学领域最具挑战性的前沿研究课题之一。

Selective oxidation of methane and light alkanes is one of the most challenging problems in terms of heterogeneous catalysis and surface science.

甲烷和低碳烷烃选择性氧化是多相催化和表面科学领域最具挑战性的前沿研究课题之一。

The effects of reaction temperature and solvent on alkanes catalytic oxidation and the reusable of heterogeneous catalyst are also investigated.

本文还考察了反应温度和溶剂效应对烃类均相及非均相催化氧化反应的影响以及非均相催化剂的重复使用性能。

Because of alkanes'stability, the activation and transformation of them require very harsh conditions.

由于其稳定性，烷烃的活化与转化需要相当苛刻的条件，且选择性较低，生产成本较高。

Based on molecular topological theories, two topological indices of 64 alkanes were calculated respectively.

根据分子拓扑理论，采用两个拓扑指数，计算了64个烷烃的气相色谱保留指数值。

Alkanes are the main constituents of oil and natural gas, and consequently are the principal feedstocks for the chemical industry.

链烷是油和天然气的主要成分，并且从而是化学工业的主要原料。

Under these conditions for optimum growth, the degradation rate experiments on different initial concentrations of alkanes are carried out.

在最适生长条件下，分别对不同初始质量浓度烷烃进行降解率试验。

Analysing datas of domestic and oversea, this paper discusses the use of alkanes and PAHs in the source analysis.

分析了国内外的资料，并结合几年来对北京地区的研究成果，讨论了饱和烃、多环芳烃等有机污染物在源解析方面的应用。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。