But there are some problems,such as brightness contrast between the teacher and screen because of using overhead in multimedia classroom,record difficulty in interaction teaching because of lots of students,so something must be done to alleviate the problem.

The result showed that intensity of CMG decreased evidently,and its hardness,springiness and chewiness increased significantly under the pressure of 200 MPa or above.

It is based on character intensity by using HSI model of the digital image processing.

The research and enhance project of the luminance problem of LED lamps;

Development of Electron Gun Capable of Double Electron Beams Scanning for High Luminance and High Definition Color Picture Tube;

High-luminance White Organic Light-emitting Devices Based on Rubrene Dopant;

The Lightness in Using Caramel;

The optimized design of promoting the lightness of CaAl_2O_4:Eu~(2+),Nd~(3+) phosphor powder;

There are three predominant features in colour inks: they are hues,lightness and saturation.

Preliminary operation results of BEPCⅡ luminosity monitor at Stage One;

A System of Measuring Luminosity of Color Led Module;

Human research on the microcosm is the motive force behind the development of particle accelerators,which have been advancing towards higher luminosity and better performance.

How to correctly select the projection size and brightness of the projector;

Inorganic electroluminescence film measurement power supply and development brightness property measurement;

This paper introduces the on line measurement for the Kappa number and brightness of pulp,and compares the on line measurement result with the laboratory analysis result according to the experience in few pulp mill in Europe.