Based on the model structure of the influence coefficient method analyzed in depth by matrix theory,it is explained the reason why the unreasonable and instable
By using the output inductors and body capacitances without adding any component compared with hard switching synchronous rectifier,the topology of a soft switc
The precise detection of flaw echoes buried in backscattering noise caused by material microstructure is a problem of great importance in ultrasonic non-destruc
In e-commerce the multidimensional data analysis for OLAP (on-line analytical processing) based on the web data needs integrating various data sources such as X
Treated FeS2 samples were prepared by natural FeS2 samples which were ground first,heated in nitrogen and then washed in acid. The levels of impurity elements,
This paper reviews the investigation status of the techniques for preparation of metal matrix composites and the research outcomes achieved recently. The mechan
1,3-propanediol (1,3-PD) is an important material for chemical industry, and there has been always much interest in the production of 1,3-PD using all possible