有机化学的

Chemical analysis, laboratory testing of materials, chemical engineering and synthetic organic chemistry.

化学分析及物质属性的实验测试，化学工程及复合有机化学

Aromaticity is the important concept in the field of organic chemistry and its application and the range of its application are increasingly enlarged.

芳香性是有机化学领域的重要概念，其应用与适用范围日益扩大。

It is a difficulty in organic chemistry teaching.

同时也是有机化学教学中的一个难点。

I am not good at organic chemistry.

我的有机化学学得不好。

The development of new synthetic methods and technologies is one of the most important areas in organic chemistry.

有机合成新方法、新技术是有机化学研究的前沿和热点领域之一。

I am not good = at organic chemistry.

我的有机化学学= 1；不好。

ABSTRACT Synthesis of the natural products is an important research project in the field of organic chemistry.

天然产物合成是有机化学领域中的重要研究课题。

At the same time, the developments of molecular beam epitaxy and metal organic chemical vapor deposition have made the characteristics of the devices improved rapidly.

与此同时，随着分子束外延和金属有机化学气相沉积等生长技术的发展，使VCSEL器件得以飞速提高。

Diels-Alder reaction has been one of the cornerstone reactions in organic chemistry for the construction of six-membered rings and the formation of carbon-carbon binds.

Diels-Alder 反应是有机化学中建构六员环和碳碳键生成最为重要的反应之一。

Diels-Alder reaction has been one of the cornerstone reactions in organicchemistry for the construction of six-membered rings and the formation ofcarbon-carbon binds.

Diels-Alder 反应是有机化学中建构六员环和碳碳键生成最为重要的反应之一。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。