在实验上

In chapter five, the acetic acid gas sensors were studied, which can be applied in heroin drug detection.

第五章中在实验基础上确定了毒品海洛因的结构组成，首先提出了间接检测海洛因的方法。

Fourthly, based onour experiments and the literatures', the necessities of endohedralmetallofullerenes' formation are the existence of well graphitized of carbonand metal acetylide.

四在实验和文献报导的基础上，提出原料中完好石墨化的碳和电石型金属碳化物的存在是形成Fullerene笼内金属包合物的必要条件。

The activation mechanism is also discussed on the basis of experiments.

并在实验的基础上探讨了活性炭的活化机理。

The data acquisition from tin dioxide gas sensor array, sampling control, signal preprocessing , and pattern recognition techniques (principal components analysis and back-propagation networks) in electronic noses were also studied in this thesis.

本文在研制新型气敏传感器的同时，也研究了电子鼻中SnO〓气敏传感器阵列的数据采集、进样控制、响应信号的预处理方法以及主分量分析、B-P网络模式识别技术；研制的电子鼻系统在实验系统的基础上不断改进，对白酒、有机溶剂及汽油标号有很好的识别效果，向小型化和实用化迈进了一大步。

Multi-phase CFD simulations of the crystallization process of ammonium sulphate in an industrial batch DTB crystallizer have been performed using Euler-Euler method.

在实验的基础上，使用欧拉-欧拉多相模型，在工业尺寸的间歇DTB结晶器中对硫酸铵结晶过程多相流进行了模拟。

By transmission electron microscope, selected area electron diffraction, powder X-ray diffraction, differential scanning calorimeter as well as self-devised drainage, the effects of metals on grindability, material size, hydrogen storage capacity and hydriding-dehydriding properties are emphatically researched. Fe、Co、Ni were added in pretreatment process of anthracite and the effects of the added metals are researched, also, the action mechanism of metals is discussed on the basis of experimental results.

通过透射电镜、选区电子衍射，X射线衍射、差式扫描量热分析以及自行设计的排水装置等分析测试手段，着重研究了储氢材料中金属对其可磨性、粒度大小、储氢密度、吸放氢性能等的影响，在无烟煤的预处理过程中添加了Fe、Co、Ni三种金属，研究了所添加金属对材料储氢的影响，并在实验结果的基础上探讨了储氢材料中金属的作用机理。

Based on the diffusive equation of incoherent-feedback random lasers,whose gain is modified by adding a saturation factor,the evolution of the emitted light intensity in two-photon pumping random lasers varying with time is studied by use of finite difference method.

引言从20世纪90年代开始，人们对光在增益无序介质中与介质相互作用而产生的受激辐射现象的研究表现出了极大的兴趣[1—11]。实验上，国内外的学者们在不同的随机介质中观测到了光的放大。

Before the study, there is no significant difference in music performance between TG and CG.

二、在实验前，两组学生在音乐成就上没有差异。

Writing this column from Wenzhou , a small town in southeastChina probably the size of Sialkot or Quetta , you can't ignore how the world around us has made leaps forward while we have wasted precious time in political experimentations.

我在位于中国东南部的温州写下这篇稿子。那座城市的面积很可能和巴基斯坦的锡亚尔科特或基达差不多。我们周围的世界飞跃向前，但我们却把宝贵的时间浪费在政治实验上，我们无法忽视这一点。

The purpose of the tests were to ascertain how well soldiers could perform their tasks on the battlefield while under the influence of L.S.D.

实验的目的是探知在L.S.D的影响下，士兵怎样才能在战场上更好的执行他们的任务。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。