The Preparation of Olefin Polymerization Catalysts from Magnesium Alkyls

Extraction of Leping coal consists mainly of aromatic compounds and alkyls derivatives.

乐平煤萃取物主要是苯类、烷烃类衍生物。

Theoretical Studies on the Hydrogen Abstraction Reactions of Halogen-Substituted Alkyls

几类卤代烷烃氢迁移反应的理论研究

Water and alcohol without aluminum alkyls presence would decrease the charge accumulation in the fluidized bed.

实验结果表明，在没有烷基铝存在的条件下，水和醇类会使流化床中的静电积累量显著减少。

At present, much attention had been paid to the study of the surfactants with four coordinate boron oxygen heterocycles structure, however, the main work was focused on the synthesis of the surfactants containing boron with short-carbon chain alkyls and their basic properties.

目前研究的方向主要是含四配位硼氧杂环结构的表面活性剂，但都是对一些含短链烷基的合成和基本性质研究，对含长碳链的还极少见文献报道。

Improvement of selective hydrogenation catalysts for alkyne series in France

法国对炔烃选择加氢催化剂的改进

Study on TiC black film by low temperature deposition with alkane/ alkyne gas

烷/炔气低温沉积TiC黑膜的研究

Study on Part Hydrogenation Mechanism of Alkyne

炔烃部分氢化机理的探讨

Study on New Polymerization Catalytic Systems of Alkyne and the Properties of the Polymers

新的炔烃聚合催化体系及其聚合物性质的研究

Analysis of trace alkynes in mixed C_4 fractions by two-dimensional gas chromatography

二维气相色谱技术分析混合碳四馏分中微量炔烃

The relationship between the boiling points of alkynes and their molecular graph

炔烃的沸点和分子结构图

Then we made the extension reaction of alkynes, and got a very good result.

然后，我们又做了炔烃的扩展反应，均得到了很好的结果。

It mainly obtained by the addition reaction of alkynes and iodine.

它主要是由炔烃和碘的加成反应得到。

The cooling and heating energy consumption and use cost occupy 60-70% in all the air conditioning system, different schemes are widely different. It brings more and more serious energy and environment issues that have aroused the strong attention of the experts in HVAC industry.

而空调冷热源的能耗及使用成本占整个集中空调系统的60～70%，不同冷热源方案的差别也很大，随之带来的日趋严重的能耗和环境问题一直是业内人士关注的焦点。

The airflow of the terminal discharge air outlet must be adjusted and balanced by air flow adjusting valve in all air district air-conditioning system.

全空气集中空调系统必须借助风量调节阀来调节和平衡末端送风口的风量。

Energy-saving and Purifying of All Outdoor-air Air Conditioning System

全新风空调系统的节能与净化设备问题

Application of SSR for All Fresh Air System

固态继电器在全新风机组中的应用

The Research on the Design Method of All Air System Based on Ladder Diagram

基于梯形图的全气动系统快速设计方法研究

Taking six air conditioning projects as example, analyses the EER of all air system, fan coil unit plus fresh air system and multi-couple unit system under design conditions.

以6个实际工程空调系统为例，对全空气系统、风机盘管加新风系统、多联机系统设计工况下的能效比进行了分析计算。

He keeps all his clients at arm's length.

他不与任何委托人过分亲密。

The height of all students and the arm span were measured, as well.

同时，还测定了他们的身高与前臂的宽度。