carrying out national requirements in national defense
mapping between the operation space and pattern space
separating dry space from moist space
11th Chinese national games
11th Five-Year Plan national major scientific and
16th National Congress of CPC
1980 National Coordinate System
1997 National Conference
2(superscript nd) generation National Health Insur
2000 National Geodetic Coordinate System
2002 National Nutrition and Health Survey
8th National Academic Forum of Architecture and Cu