METHODS According to the principles referring to the drug stability in the CHP and the standard of its quality,we carried out the stress testing,accelerated testing and long-term testing.

Accelerated life testing(ALT) and accelerated degradation testing(ADT) are two main kind of reliability accelerated testing technology.

Analyzing the general method of temperature screening for assembly in our country, combined with the experience of accelerated testing abroad, we proposed a definition method of parameters, such as temperature range, rate of change of temperature and dwell time.

Effect of stray current on the dissoluble corrosion of Guangzhou metro engineering concrete by accelerated test;

Method The influences of non-buffer and different buffers(phosphate buffer solution and Citrate buffer solution)on the stability of povidone-iodine gel were investigated by accelerated tests at 30 ℃and 40 ℃.

Methods The change of color, pH value, ingredients and the change of related materials were detected through the trials under the influence factors including sunlight, high and low temperatures and accelerated test which was done under specified conditions of constant temperatures of 40℃, 50℃, 60℃for 15 weeks as well as samples which were observed under room temperature.

An investigation of the stress corrosion cracking resistance of high strength aluminum alloys 2A12 and 7A04 in different atmospheric environments were presented,results were compared with those obtained in laboratory accelerated tests.