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1·Many results on deeply qualitative investigation of models of biochemical reaction mechanism have been obtained by Chinese scholars in recent ten years.

近十余年来，我国学者对一系列重要的生化反应机理模型作了深入的定性分析，有的已经取得了完整的结果。

2·The products were gained by vacuum distillation from reaction liquid, meanwhile their qualitative and quantitative analysis were carried out by GC-MS.

反应结束后反应液经过真空蒸馏后得到产物，并通过GC - MS进行定性和定量分析。

3·So it is worthy of analysis the qualitative properties of reaction diffusion system and periodic system.

对具有反应扩散及周期运动的神经网络的定性性质的分析具有广泛的理论和应用价值。

4·This paper is devoted to the qualitative analysis of a differential system for three molecular saturated reaction. The conditions for the existence and nonexistence of limit cycles are obtained.

采用定性分析的方法，讨论了某类三分子饱和反应系统的极限环存在和不存在的条件。

5·In order to improve qualitative analysis of GC-MS, the method of GC-MS analysis unifying with craft and understanding the reaction mechanism is presented.

C - M S的分析必须和工艺相结合，只有对反应机理有充分的认识，才能更好地做好GC - MS的定性工作。

6·Glycol after reaction has no qualitative change and may be reused for many times.

反应后乙二醇没有发生质的变化，可以多次使用。

7·India is also procuring 19 Qualitative Polymerase Chain Reaction machines (PCR), the only diagnostic tool in the world that accurately detects the presence of HIV in children aged below 13.

印度也获得了19台定量pcr仪。定量pcr仪是世界上唯一能够准确地检测出13岁以下儿童HIV感染的诊断设备。