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

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。

He keeps all his clients3 at arm's length. 5.

他和所有的客户都保持距离。

With the rapid development of mobile devices, mobile phone devices in the future will play an increasingly important role. At present, the processor of many mobile devices is all using the ARM architecture therefore extending virtualization technology in this platform has very significance.

随着移动设备的迅猛发展，手机设备在未来会发挥越来越重要的作用，目前很多移动设备的处理器使用的都是ARM架构，因此在此平台上扩展虚拟化技术有十分重要的意义。

I poured super giue all over my arm.

我胳膊上涂了超粘胶。

Big fella's got it tattooed all over his arm.

那个大块头手臂上有纹身。

But it was all over his arm.

但是他胳膊上全是。

Whenever he moved, the wound sent pains all along his arm.

他只要一动，伤口就连带整个胳膊都疼。

All basketballers must arm themselves with individual techniques.

所有篮球队员必须用个人技术武装自己。

You think you can get it all back?

你可以让一切回到从前？

And if you work hard, you get it all back.

只要你努力工作，你还会挣到钱。