Based on the 8th generation of International Geomagnetic Reference Field, the global average westward drift rates of geomagnetic potential harmonic W-1～W-(10) during 1900～2000 are studied by using the Briggs method.

IGRF(International Geomagnetic Reference Field) are the models of geomagnetic main field and secular variation.

The data of international geomagnetic reference field are widely used in China.

Based on the seventh generation International Geomagnetic Reference Field,the geomagnetic secular variation grid values were calculated,and the secular variation charts (,,,,,,) were drawn over China and adjacent areas for 1995～2000.

A detailed comparison of medical curriculums between the US and China and the related international standards;

Prompting adoption of international standards and advanced overseas standards for battery industry;

The situation and suggestions on environmental monitoring of China adopting international standards;

The comment on the main part of the international standards of fruit juice drinks;

An improved design and experimental analysis for refrigerated container property test system based on international standard;

Through 14 years' endeavor, lSO has newly published ISO 9236-1: Ph otograp hy- Se n si tom-etry of screen/film systems for medical radiography-Part 1: Determination of sensitometriccurve, speed and average gradient and suggested P-Members to initiate the appropriate actionaimed at adopting this new ISO Standard as National Sandaxd.

Two ISO standards and three GB standards of medical Lab are introduced.

Two ISO standards and three GB standards are introduced.