主要研究课题
main subjects of research
滴灌理论研究领域
Theory research of drip irrigation
前沿领域研究
research on frontier field
人文研究领域
the fields of human study
优先研究领域
paramount researching field
preferential research domain
重点研究领域
important research fields
key research field
长江流域主要城市
typical cities in Yangtze River Basin
领域主题偏好向量
domain topic preference vector
培训检讨及研究主任
head training review & research