Cooperative Library Systems  图书馆合作体系

integrated library systems  图书馆集成系统

library-library screening  库－库筛选

128-bit operating systems  128-位操作系统

32-bit operating systems  32-位操作系统

64-Bit Operating Systems  64-位操作系统

Distributed operating systems  分布式操作系统

Embedded Operating Systems  组态软件; 嵌入式操作系统

floppy disk operating systems  软性磁盘操作系统; 软磁盘操作系统

IBM operating systems  IBM操作系统

network in different operating systems  跨平台联网

Operating Systems  操作系统; 云计算操作系统; 运行系统; 监督操作系统

operating systems， floppy disk  监督操作系统

OSSL Operating Systems Simulation Language  操作系统模拟语言

Real Time versions of Linux operating systems  实时化的Linux操作系统

real-time operating systems  嵌入式实时操作系统

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

operating in all weathers operating  全天候运行

present operating cost and annual operating cost  费用现值与费用年值法