Grassland Research Institute  中国农业科学院草原研究所

Gansu Grassland Ecological Research Institute  甘肃省草原生态研究所

Beijing Central Engineering and Research Research Institute of Non -ferrous Metallurgical Industry  北京有色冶金设计研究总院

scientific research research results  科研成果

Scattered grassland-desert grassland Ecosystem  疏林草地－荒漠草地交错带

Accounting Research achievements distribution Research personnel  黄芩苷(注射用)

and the inner relations among them are analyzed to reveal the research hotspots of the doctoral dissertations in Library Science abroad,so to provide reference for the research of Library Science in China.KeywordsLibrary Science  光纤同轴电缆混合网

Exploration Research Department of CNOOC Research Center  中海石油研究中心勘探研究部

operations research [= operational research]  作战研析; 作战研究; 作业研究

China Offshore Oil Research Center Bohai Research Institute  中海石油研究中心渤海研究院

‘black soil type’ degraded grassland  黑土型退化草地

“Black soil type” deteriorated grassland  黑土型退化草地

“black soil type”deteriorated grassland  黑土型退化草地

“Black soil”degraded grassland  黑土型退化草地

“Black-soil” type degraded grassland  黑土型退化草地

adequate rate of utilization of grassland forages  草地资源的适度利用

Advanced comprehensive and sequential classification of grassland  改进的综合顺序分类法

Agri-grassland family pasture pattern  草地农业家庭牧场模式

agro grassland  草地畜牧业