parameters and material structures,three kinds of GaAs based RTD material structures have been designed.

The basic principle of operation, significant advantages, material structures, existent problems and latest progresses of the phase change materials are discussed in the review.

This paper points out that the diversification of observation modes,material structures,illumination conditions,and their interaction are the main factors influencing the dynamic characteristics of happening colour.

In order to develop the ribbon amorphous alloy structural materials, the experiments including mechanical tests and morphology observation were carried out.

The latest research progress on alloying of magnesium(Mg)-based materials,including Mg-based structural material,Mg-based hydrogen storage alloy,and Mg-based amorphous alloy,in recent years is reviewed.

Recent progress in inorganic-organic hybrid material is reviewed with em-phasis on research and application of this material used as structural material,optical material or coating material in this paper.

Application of a laser measurement method in measuring the modulus of elasticity in tension parallel to grain of Cryptomeria japonica D.Don structural lumber.;

The objective of this paper was to investigate the possibility of a transverse vibration technique for assessing static bending,tensile and compressive strength of structural lumbers.

This paper reviewed the studies and standards for structural laminated wood adhesives and the testing methods in China.

Experimental research for effects of low temperatureon fracture toughness J_(IC) of structural steels;

Experimental measurements of the crack tip opening displacement of structural steels at low temperature;

The paper systematically discribes this discipline and also introduces the results if the low temperature experiment made by the author to investigate the main mechanical properties of common used structural steel,such as common carbon steel,low\|alloy steel,thermal strength carbon steel,ect.