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demonstration experiment
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  demonstration experiment
In a demonstration experiment, a 80-ns pulse of kilowatt power with frequency modulation in a 5% band was compressed to a 1.5-ns pulse with a 25-fold power amplification.
      
A demonstration experiment in one of these counties revealed that patients who normally require hospitalization at the state institution could be treated at the county facility.
      
The demonstration experiment has been proved useful in elementary thermodynamic courses for introducing the entropy concept.
      
A system of criteria is discussed which is necessary for the realization of a direct gamma-lasing demonstration experiment (DGLDE) as a basis for a specific gamma laser (GL) scheme.
      
In a related demonstration experiment, the frequency-doubled diode laser is applied to excite the λ=369.5 nm 2S1/2-2P1/2 transition of ytterbium ions in a hollow-cathode discharge.
      
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The chemical demonstration experiment is the main way of chemistry teaching.It is a chief component part of chemistry teaching and it also plays a positive role in improving the teaching quality and educating the students' ability.The author analyses the basic requirement and way of doing the demonstration experiment,and also puts forward her idea on improving the experiment.

总结分析了做好演示实验的基本要求和做法,并对实验的改进提出了自己的见解。

This paper first introduces the color\|changing range of methyl orange indicator in the course Analytical Chemistry. Then it designs a demonstration experiment for classroom. Finally it discusses the necessity, principle, experimentation and its effect of this demonstration experiment.

就《分析化学》课堂教学中甲基橙指示剂的变色范围,设计安排了演示实验教学,论述了配备这一演示实验的必要性、原理和实验的具体内容及效果。

Making use of the graph imagery processing function of computer multi-media can optimize the effect of demonstration experiment,imitate various chemical reaction process,to reach macroscopic and visualization in chemical experiment teaching and effectively improve the teaching quality.Making use of the related system software can promote the chemistry laboratory management information-based and scientific,better serve for the teaching.

运用计算机多媒体的图形图像处理功能,优化演示实验的演示效果,还可以模拟各种化学反应过程,使化学实验教学宏观化和形象化,以提高实验课的教学质量。运用相关的系统软件能够促进化学实验室管理信息化和科学化,更好地为教学服务。

 
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