This paper discusses the use of the operator of auto-increment、auto-decrement in assignment statement and in printf function,which will be helpful for readers to understand and use these two operators.

Study on Self-reinforcement of High Density Polyethylene(HDPE)Pipe Extruded under Compound Stress Field;

The tensile-strength and Young's modulus in cycle-direction of the expanded pipes increased by 30 % and 50 %～100 %,respectively,resulting in a self-reinforcement.

In respect to the technology and actual practice of metal injection molding(MI M),thispaper analyses different methods of self-reinforcement polymers,and the effect of injection pa-rameters on molding-filling performance.

Progress of studies on self-toughening alumina ceramics;

This paper reviewed the characteristics and developments in strengthening andtoughening techniques of glass-ceramics including the surface strengthening, the secondary phase tougheningand self-toughening technique.

The paper overviewed the studies on additives self-toughening alumina ceramics, concluded different opinions on the effect of TiO2 on abnormal grain growth of alumina, analyzed the mechanism of abnormal grain growth of alumina and self-toughening alumina ceramics.

Bilinear model in autofrettage theory and its examination;

Experimental Research on the Relaxation of Residual Stress of Autofrettaged Thick-walled Vessel under Circulation Pressure;

Numerical analysis of autofrettaged vessel for optimum overstrain extent;