Based on soft-starter test,the verification of overload release in GB14048.

CNAL T0279/T0280/T0281/T0282 proficiency testing of year 2006;

Technical analysis of CNAL proficiency testing of coal of year 2006;

Robust statistics with uncertainty and proficiency testing in laboratory;

Organical and designed laboratory ability validation would insure high detecting level and obtain scientific and exact monitoring data.

A inter-laboratory ability verification program involved 98 laboratories for the determination of malachite green metabolite leuco-malachite green residues in eels was presented.

This review presented the results of the ability verification program for determining dichloropropanol in soy sauce organized by Certification and Accreditation Administration of the People s Republic of China(CNCA)and analyzed the influential factors of the result such as standard substances,sample processing,operating conditions of instruments,data processing,etc.

The following paper introduces the factors should be noticed by electrical engineers during using dry-type transformers,and illustrates the temperature control system,protection method and overload capacity of dry-type transformers,in order to offer a reference for the people who use dry-type transformers.

Based on the study of transformation equipment standards both at home and abroad,the long-term continuous overload capacity,the short-term overload capacity,and the emergency overload capa.

<Abstrcat>Based on theory of induction motor synchronization,study relation with load rate,rotor excitation current,active and inactive power in allowing rotor-wound heat and overload ability via theory analysis and experiments.

Based on theory of induction motor synchronization, studies relation with load rate,rotor excitation current ,active and inactive power in allowing rotor-wound heat and overload ability via theory analysis and experiments.

From the texture,rated,overload ability,construction of transistor core,module composition and radiation,drive and separation,combined with dissection for IGBT,this paper analyzes the reliability of high power IGBT refer to puncture and explosion of high power IGBT in converter and chopping wave speed-regulation in practice.